diff --git a/common/djangoapps/xmodule_modifiers.py b/common/djangoapps/xmodule_modifiers.py
index 597d74ce6f..380388b545 100644
--- a/common/djangoapps/xmodule_modifiers.py
+++ b/common/djangoapps/xmodule_modifiers.py
@@ -90,10 +90,12 @@ def add_histogram(get_html, module):
 
         # TODO (ichuang): Remove after fall 2012 LMS migration done
         if settings.MITX_FEATURES.get('ENABLE_LMS_MIGRATION'):
-            [filepath, filename] = module.definition.get('filename','')
+            [filepath, filename] = module.definition.get('filename', ['', None])
             osfs = module.system.filestore
             if filename is not None and osfs.exists(filename):
-                filepath = filename	# if original, unmangled filename exists then use it (github doesn't like symlinks)
+                # if original, unmangled filename exists then use it (github
+                # doesn't like symlinks)
+                filepath = filename
             data_dir = osfs.root_path.rsplit('/')[-1]
             edit_link = "https://github.com/MITx/%s/tree/master/%s" % (data_dir,filepath)
         else:
diff --git a/common/lib/capa/capa/inputtypes.py b/common/lib/capa/capa/inputtypes.py
index 583d29b82e..5092e5c378 100644
--- a/common/lib/capa/capa/inputtypes.py
+++ b/common/lib/capa/capa/inputtypes.py
@@ -204,7 +204,7 @@ def extract_choices(element):
             raise Exception("[courseware.capa.inputtypes.extract_choices] \
                              Expected a <choice> tag; got %s instead"
                              % choice.tag)
-        choice_text = ''.join([etree.tostring(x) for x in choice])
+        choice_text = ''.join([x.text for x in choice])
 
         choices.append((choice.get("name"), choice_text))
 
diff --git a/common/lib/capa/capa/responsetypes.py b/common/lib/capa/capa/responsetypes.py
index 9420560c02..4a4e827752 100644
--- a/common/lib/capa/capa/responsetypes.py
+++ b/common/lib/capa/capa/responsetypes.py
@@ -800,6 +800,12 @@ class CodeResponse(LoncapaResponse):
     '''
     Grade student code using an external queueing server, called 'xqueue'
 
+    Expects 'xqueue' dict in ModuleSystem with the following keys:
+        system.xqueue = { 'interface': XqueueInterface object,
+                          'callback_url': Per-StudentModule callback URL where results are posted (string),
+                          'default_queuename': Default queuename to submit request (string)
+                        }
+
     External requests are only submitted for student submission grading 
         (i.e. and not for getting reference answers)
     '''
@@ -873,15 +879,16 @@ class CodeResponse(LoncapaResponse):
                     'edX_cmd': 'get_score',
                     'edX_tests': self.tests,
                     'processor': self.code,
-                    'edX_student_response': unicode(submission), # unicode on File object returns its filename
                     }
         
         # Submit request
-        if hasattr(submission, 'read'): # Test for whether submission is a file
+        if is_file(submission):
+            contents.update({'edX_student_response': submission.name})
             (error, msg) = qinterface.send_to_queue(header=xheader,
                                                     body=json.dumps(contents),
                                                     file_to_upload=submission)
         else:
+            contents.update({'edX_student_response': submission})
             (error, msg) = qinterface.send_to_queue(header=xheader,
                                                     body=json.dumps(contents))
 
diff --git a/common/lib/capa/capa/util.py b/common/lib/capa/capa/util.py
index 1dc113cd20..005494e8c0 100644
--- a/common/lib/capa/capa/util.py
+++ b/common/lib/capa/capa/util.py
@@ -39,5 +39,18 @@ def convert_files_to_filenames(answers):
     '''
     new_answers = dict()
     for answer_id in answers.keys():
-        new_answers[answer_id] = unicode(answers[answer_id])
+        if is_file(answers[answer_id]):
+            new_answers[answer_id] = answers[answer_id].name
+        else:
+            new_answers[answer_id] = answers[answer_id]
     return new_answers
+
+def is_file(file_to_test):
+    '''
+    Duck typing to check if 'file_to_test' is a File object
+    '''
+    is_file = True
+    for method in ['read', 'name']:
+        if not hasattr(file_to_test, method):
+            is_file = False
+    return is_file 
diff --git a/common/lib/xmodule/xmodule/abtest_module.py b/common/lib/xmodule/xmodule/abtest_module.py
index 8d6604b06b..9d4744e2c9 100644
--- a/common/lib/xmodule/xmodule/abtest_module.py
+++ b/common/lib/xmodule/xmodule/abtest_module.py
@@ -103,7 +103,9 @@ class ABTestDescriptor(RawDescriptor, XmlDescriptor):
         experiment = xml_object.get('experiment')
 
         if experiment is None:
-            raise InvalidDefinitionError("ABTests must specify an experiment. Not found in:\n{xml}".format(xml=etree.tostring(xml_object, pretty_print=True)))
+            raise InvalidDefinitionError(
+                "ABTests must specify an experiment. Not found in:\n{xml}"
+                .format(xml=etree.tostring(xml_object, pretty_print=True)))
 
         definition = {
             'data': {
@@ -127,7 +129,9 @@ class ABTestDescriptor(RawDescriptor, XmlDescriptor):
             definition['data']['group_content'][name] = child_content_urls
             definition['children'].extend(child_content_urls)
 
-        default_portion = 1 - sum(portion for (name, portion) in definition['data']['group_portions'].items())
+        default_portion = 1 - sum(
+            portion for (name, portion) in definition['data']['group_portions'].items())
+
         if default_portion < 0:
             raise InvalidDefinitionError("ABTest portions must add up to less than or equal to 1")
 
diff --git a/common/lib/xmodule/xmodule/capa_module.py b/common/lib/xmodule/xmodule/capa_module.py
index 7ce76def32..ba49f98257 100644
--- a/common/lib/xmodule/xmodule/capa_module.py
+++ b/common/lib/xmodule/xmodule/capa_module.py
@@ -119,9 +119,9 @@ class CapaModule(XModule):
         if self.show_answer == "":
             self.show_answer = "closed"
 
-        if instance_state != None:
+        if instance_state is not None:
             instance_state = json.loads(instance_state)
-        if instance_state != None and 'attempts' in instance_state:
+        if instance_state is not None and 'attempts' in instance_state:
             self.attempts = instance_state['attempts']
 
         self.name = only_one(dom2.xpath('/problem/@name'))
@@ -130,7 +130,7 @@ class CapaModule(XModule):
         if weight_string:
             self.weight = float(weight_string)
         else:
-            self.weight = 1
+            self.weight = None
 
         if self.rerandomize == 'never':
             seed = 1
@@ -238,7 +238,7 @@ class CapaModule(XModule):
         content = {'name': self.metadata['display_name'],
                    'html': html,
                    'weight': self.weight,
-                  }
+                   }
 
         # We using strings as truthy values, because the terminology of the
         # check button is context-specific.
@@ -563,6 +563,11 @@ class CapaDescriptor(RawDescriptor):
 
     module_class = CapaModule
 
+    # Capa modules have some additional metadata:
+    # TODO (vshnayder): do problems have any other metadata?  Do they
+    # actually use type and points?
+    metadata_attributes = RawDescriptor.metadata_attributes + ('type', 'points')
+
     # VS[compat]
     # TODO (cpennington): Delete this method once all fall 2012 course are being
     # edited in the cms
@@ -572,8 +577,3 @@ class CapaDescriptor(RawDescriptor):
             'problems/' + path[8:],
             path[8:],
         ]
-
-    @classmethod
-    def split_to_file(cls, xml_object):
-        '''Problems always written in their own files'''
-        return True
diff --git a/common/lib/xmodule/xmodule/course_module.py b/common/lib/xmodule/xmodule/course_module.py
index acdc574220..ce1b93aa44 100644
--- a/common/lib/xmodule/xmodule/course_module.py
+++ b/common/lib/xmodule/xmodule/course_module.py
@@ -3,6 +3,7 @@ import time
 import dateutil.parser
 import logging
 
+from xmodule.util.decorators import lazyproperty
 from xmodule.graders import load_grading_policy
 from xmodule.modulestore import Location
 from xmodule.seq_module import SequenceDescriptor, SequenceModule
@@ -12,13 +13,9 @@ log = logging.getLogger(__name__)
 
 class CourseDescriptor(SequenceDescriptor):
     module_class = SequenceModule
-    metadata_attributes = SequenceDescriptor.metadata_attributes + ('org', 'course')
 
     def __init__(self, system, definition=None, **kwargs):
         super(CourseDescriptor, self).__init__(system, definition, **kwargs)
-        
-        self._grader = None
-        self._grade_cutoffs = None
 
         msg = None
         try:
@@ -39,34 +36,84 @@ class CourseDescriptor(SequenceDescriptor):
 
     def has_started(self):
         return time.gmtime() > self.start
-    
+
     @property
     def grader(self):
-        self.__load_grading_policy()
-        return self._grader
-    
+        return self.__grading_policy['GRADER']
+
     @property
     def grade_cutoffs(self):
-        self.__load_grading_policy()
-        return self._grade_cutoffs
-    
-    
-    def __load_grading_policy(self):
-        if not self._grader or not self._grade_cutoffs:
-            policy_string = ""
-            
-            try:
-                with self.system.resources_fs.open("grading_policy.json") as grading_policy_file:
-                    policy_string = grading_policy_file.read()
-            except (IOError, ResourceNotFoundError):
-                log.warning("Unable to load course settings file from grading_policy.json in course " + self.id)
-            
-            grading_policy = load_grading_policy(policy_string)
-            
-            self._grader = grading_policy['GRADER']
-            self._grade_cutoffs = grading_policy['GRADE_CUTOFFS']
-    
-    
+        return self.__grading_policy['GRADE_CUTOFFS']
+
+    @lazyproperty
+    def __grading_policy(self):
+        policy_string = ""
+
+        try:
+            with self.system.resources_fs.open("grading_policy.json") as grading_policy_file:
+                policy_string = grading_policy_file.read()
+        except (IOError, ResourceNotFoundError):
+            log.warning("Unable to load course settings file from grading_policy.json in course " + self.id)
+
+        grading_policy = load_grading_policy(policy_string)
+
+        return grading_policy
+
+
+    @lazyproperty
+    def grading_context(self):
+        """
+        This returns a dictionary with keys necessary for quickly grading
+        a student. They are used by grades.grade()
+
+        The grading context has two keys:
+        graded_sections - This contains the sections that are graded, as
+            well as all possible children modules that can affect the
+            grading. This allows some sections to be skipped if the student
+            hasn't seen any part of it.
+
+            The format is a dictionary keyed by section-type. The values are
+            arrays of dictionaries containing
+                "section_descriptor" : The section descriptor
+                "xmoduledescriptors" : An array of xmoduledescriptors that
+                    could possibly be in the section, for any student
+
+        all_descriptors - This contains a list of all xmodules that can
+            effect grading a student. This is used to efficiently fetch
+            all the xmodule state for a StudentModuleCache without walking
+            the descriptor tree again.
+
+
+        """
+
+        all_descriptors = []
+        graded_sections = {}
+
+        def yield_descriptor_descendents(module_descriptor):
+            for child in module_descriptor.get_children():
+                yield child
+                for module_descriptor in yield_descriptor_descendents(child):
+                    yield module_descriptor
+
+        for c in self.get_children():
+            sections = []
+            for s in c.get_children():
+                if s.metadata.get('graded', False):
+                    # TODO: Only include modules that have a score here
+                    xmoduledescriptors = [child for child in yield_descriptor_descendents(s)]
+
+                    section_description = { 'section_descriptor' : s, 'xmoduledescriptors' : xmoduledescriptors}
+
+                    section_format = s.metadata.get('format', "")
+                    graded_sections[ section_format ] = graded_sections.get( section_format, [] ) + [section_description]
+
+                    all_descriptors.extend(xmoduledescriptors)
+                    all_descriptors.append(s)
+
+        return { 'graded_sections' : graded_sections,
+                 'all_descriptors' : all_descriptors,}
+
+
     @staticmethod
     def id_to_location(course_id):
         '''Convert the given course_id (org/course/name) to a location object.
diff --git a/common/lib/xmodule/xmodule/css/video/display.scss b/common/lib/xmodule/xmodule/css/video/display.scss
index 789a267755..bb69c30abb 100644
--- a/common/lib/xmodule/xmodule/css/video/display.scss
+++ b/common/lib/xmodule/xmodule/css/video/display.scss
@@ -207,7 +207,7 @@ div.video {
             h3 {
               color: #999;
               float: left;
-              font-size: 12px;
+              font-size: em(14);
               font-weight: normal;
               letter-spacing: 1px;
               padding: 0 lh(.25) 0 lh(.5);
@@ -221,6 +221,7 @@ div.video {
               margin-bottom: 0;
               padding: 0 lh(.5) 0 0;
               line-height: 46px;
+              color: #fff;
             }
 
             &:hover, &:active, &:focus {
diff --git a/common/lib/xmodule/xmodule/error_module.py b/common/lib/xmodule/xmodule/error_module.py
index ecc90873b9..882d181b8b 100644
--- a/common/lib/xmodule/xmodule/error_module.py
+++ b/common/lib/xmodule/xmodule/error_module.py
@@ -1,5 +1,8 @@
-import sys
+import hashlib
 import logging
+import random
+import string
+import sys
 
 from pkg_resources import resource_string
 from lxml import etree
@@ -35,7 +38,8 @@ class ErrorDescriptor(EditingDescriptor):
                  error_msg='Error not available'):
         '''Create an instance of this descriptor from the supplied data.
 
-        Does not try to parse the data--just stores it.
+        Does not require that xml_data be parseable--just stores it and exports
+        as-is if not.
 
         Takes an extra, optional, parameter--the error that caused an
         issue.  (should be a string, or convert usefully into one).
@@ -45,6 +49,13 @@ class ErrorDescriptor(EditingDescriptor):
         definition = {'data': inner}
         inner['error_msg'] = str(error_msg)
 
+        # Pick a unique url_name -- the sha1 hash of the xml_data.
+        # NOTE: We could try to pull out the url_name of the errored descriptor,
+        # but url_names aren't guaranteed to be unique between descriptor types,
+        # and ErrorDescriptor can wrap any type.  When the wrapped module is fixed,
+        # it will be written out with the original url_name.
+        url_name = hashlib.sha1(xml_data).hexdigest()
+
         try:
             # If this is already an error tag, don't want to re-wrap it.
             xml_obj = etree.fromstring(xml_data)
@@ -63,7 +74,7 @@ class ErrorDescriptor(EditingDescriptor):
         inner['contents'] = xml_data
         # TODO (vshnayder): Do we need a unique slug here?  Just pick a random
         # 64-bit num?
-        location = ['i4x', org, course, 'error', 'slug']
+        location = ['i4x', org, course, 'error', url_name]
         metadata = {}  # stays in the xml_data
 
         return cls(system, definition, location=location, metadata=metadata)
diff --git a/common/lib/xmodule/xmodule/html_module.py b/common/lib/xmodule/xmodule/html_module.py
index 260b84278b..d8837d876f 100644
--- a/common/lib/xmodule/xmodule/html_module.py
+++ b/common/lib/xmodule/xmodule/html_module.py
@@ -13,6 +13,7 @@ from .html_checker import check_html
 
 log = logging.getLogger("mitx.courseware")
 
+
 class HtmlModule(XModule):
     def get_html(self):
         return self.html
@@ -36,18 +37,19 @@ class HtmlDescriptor(XmlDescriptor, EditingDescriptor):
     # are being edited in the cms
     @classmethod
     def backcompat_paths(cls, path):
-        origpath = path
         if path.endswith('.html.xml'):
-            path = path[:-9] + '.html'  #backcompat--look for html instead of xml
+            path = path[:-9] + '.html'  # backcompat--look for html instead of xml
         candidates = []
         while os.sep in path:
             candidates.append(path)
             _, _, path = path.partition(os.sep)
 
         # also look for .html versions instead of .xml
-        if origpath.endswith('.xml'):
-            candidates.append(origpath[:-4] + '.html')
-        return candidates
+        nc = []
+        for candidate in candidates:
+            if candidate.endswith('.xml'):
+                nc.append(candidate[:-4] + '.html')
+        return candidates + nc
 
     # NOTE: html descriptors are special.  We do not want to parse and
     # export them ourselves, because that can break things (e.g. lxml
@@ -69,7 +71,7 @@ class HtmlDescriptor(XmlDescriptor, EditingDescriptor):
         if filename is None:
             definition_xml = copy.deepcopy(xml_object)
             cls.clean_metadata_from_xml(definition_xml)
-            return {'data' : stringify_children(definition_xml)}
+            return {'data': stringify_children(definition_xml)}
         else:
             filepath = cls._format_filepath(xml_object.tag, filename)
 
@@ -80,7 +82,7 @@ class HtmlDescriptor(XmlDescriptor, EditingDescriptor):
             # online and has imported all current (fall 2012) courses from xml
             if not system.resources_fs.exists(filepath):
                 candidates = cls.backcompat_paths(filepath)
-                #log.debug("candidates = {0}".format(candidates))
+                log.debug("candidates = {0}".format(candidates))
                 for candidate in candidates:
                     if system.resources_fs.exists(candidate):
                         filepath = candidate
@@ -95,7 +97,7 @@ class HtmlDescriptor(XmlDescriptor, EditingDescriptor):
                         log.warning(msg)
                         system.error_tracker("Warning: " + msg)
 
-                    definition = {'data' : html}
+                    definition = {'data': html}
 
                     # TODO (ichuang): remove this after migration
                     # for Fall 2012 LMS migration: keep filename (and unmangled filename)
@@ -109,17 +111,11 @@ class HtmlDescriptor(XmlDescriptor, EditingDescriptor):
                 # add more info and re-raise
                 raise Exception(msg), None, sys.exc_info()[2]
 
-    @classmethod
-    def split_to_file(cls, xml_object):
-        '''Never include inline html'''
-        return True
-
-
     # TODO (vshnayder): make export put things in the right places.
 
     def definition_to_xml(self, resource_fs):
         '''If the contents are valid xml, write them to filename.xml.  Otherwise,
-        write just the <html filename=""> tag to filename.xml, and the html
+        write just <html filename="" [meta-attrs="..."]> to filename.xml, and the html
         string to filename.html.
         '''
         try:
@@ -138,4 +134,3 @@ class HtmlDescriptor(XmlDescriptor, EditingDescriptor):
         elt = etree.Element('html')
         elt.set("filename", self.url_name)
         return elt
-
diff --git a/common/lib/xmodule/xmodule/modulestore/xml.py b/common/lib/xmodule/xmodule/modulestore/xml.py
index 46fcf19469..f9093f355a 100644
--- a/common/lib/xmodule/xmodule/modulestore/xml.py
+++ b/common/lib/xmodule/xmodule/modulestore/xml.py
@@ -188,21 +188,26 @@ class XMLModuleStore(ModuleStoreBase):
             course_file = StringIO(clean_out_mako_templating(course_file.read()))
 
             course_data = etree.parse(course_file).getroot()
+
             org = course_data.get('org')
 
             if org is None:
-                log.error("No 'org' attribute set for course in {dir}. "
+                msg = ("No 'org' attribute set for course in {dir}. "
                           "Using default 'edx'".format(dir=course_dir))
+                log.error(msg)
+                tracker(msg)
                 org = 'edx'
 
             course = course_data.get('course')
 
             if course is None:
-                log.error("No 'course' attribute set for course in {dir}."
+                msg = ("No 'course' attribute set for course in {dir}."
                           " Using default '{default}'".format(
                         dir=course_dir,
                         default=course_dir
                         ))
+                log.error(msg)
+                tracker(msg)
                 course = course_dir
 
             system = ImportSystem(self, org, course, course_dir, tracker)
diff --git a/common/lib/xmodule/xmodule/seq_module.py b/common/lib/xmodule/xmodule/seq_module.py
index 5f7f41bf8d..e742a58471 100644
--- a/common/lib/xmodule/xmodule/seq_module.py
+++ b/common/lib/xmodule/xmodule/seq_module.py
@@ -122,16 +122,3 @@ class SequenceDescriptor(MakoModuleDescriptor, XmlDescriptor):
                 etree.fromstring(child.export_to_xml(resource_fs)))
         return xml_object
 
-    @classmethod
-    def split_to_file(cls, xml_object):
-        # Note: if we end up needing subclasses, can port this logic there.
-        yes = ('chapter',)
-        no = ('course',)
-
-        if xml_object.tag in yes:
-            return True
-        elif xml_object.tag in no:
-            return False
-
-        # otherwise maybe--delegate to superclass.
-        return XmlDescriptor.split_to_file(xml_object)
diff --git a/common/lib/xmodule/xmodule/tests/__init__.py b/common/lib/xmodule/xmodule/tests/__init__.py
index 7f6fcfe00c..1115d85c7f 100644
--- a/common/lib/xmodule/xmodule/tests/__init__.py
+++ b/common/lib/xmodule/xmodule/tests/__init__.py
@@ -15,6 +15,7 @@ import xmodule
 import capa.calc as calc
 import capa.capa_problem as lcp
 from capa.correctmap import CorrectMap
+from capa.util import convert_files_to_filenames
 from xmodule import graders, x_module
 from xmodule.x_module import ModuleSystem
 from xmodule.graders import Score, aggregate_scores
@@ -31,7 +32,7 @@ i4xs = ModuleSystem(
     user=Mock(),
     filestore=fs.osfs.OSFS(os.path.dirname(os.path.realpath(__file__))),
     debug=True,
-    xqueue_callback_url='/',
+    xqueue={'interface':None, 'callback_url':'/', 'default_queuename': 'testqueue'},
     is_staff=False
 )
 
@@ -278,7 +279,6 @@ class StringResponseWithHintTest(unittest.TestCase):
 class CodeResponseTest(unittest.TestCase):
     '''
     Test CodeResponse
-
     '''
     def test_update_score(self):
         problem_file = os.path.dirname(__file__) + "/test_files/coderesponse.xml"
@@ -327,7 +327,18 @@ class CodeResponseTest(unittest.TestCase):
                         self.assertFalse(test_lcp.correct_map.is_queued(answer_ids[j]))  # Should be dequeued, message delivered
                     else:
                         self.assertTrue(test_lcp.correct_map.is_queued(answer_ids[j]))  # Should be queued, message undelivered
-
+    
+    def test_convert_files_to_filenames(self):
+        problem_file = os.path.dirname(__file__) + "/test_files/coderesponse.xml"
+        fp = open(problem_file)
+        answers_with_file = {'1_2_1': 'String-based answer',
+                             '1_3_1': ['answer1', 'answer2', 'answer3'],
+                             '1_4_1': fp}
+        answers_converted = convert_files_to_filenames(answers_with_file)
+        self.assertEquals(answers_converted['1_2_1'], 'String-based answer')
+        self.assertEquals(answers_converted['1_3_1'], ['answer1', 'answer2', 'answer3'])
+        self.assertEquals(answers_converted['1_4_1'], fp.name)
+        
 
 class ChoiceResponseTest(unittest.TestCase):
 
diff --git a/common/lib/xmodule/xmodule/tests/test_export.py b/common/lib/xmodule/xmodule/tests/test_export.py
index eacf8352be..bcbf81861c 100644
--- a/common/lib/xmodule/xmodule/tests/test_export.py
+++ b/common/lib/xmodule/xmodule/tests/test_export.py
@@ -1,36 +1,107 @@
-from xmodule.modulestore.xml import XMLModuleStore
-from nose.tools import assert_equals
-from nose import SkipTest
-from tempfile import mkdtemp
+import unittest
+
 from fs.osfs import OSFS
+from nose.tools import assert_equals, assert_true
+from path import path
+from tempfile import mkdtemp
+
+from xmodule.modulestore.xml import XMLModuleStore
+
+# from ~/mitx_all/mitx/common/lib/xmodule/xmodule/tests/
+# to   ~/mitx_all/mitx/common/test
+TEST_DIR = path(__file__).abspath().dirname()
+for i in range(4):
+    TEST_DIR = TEST_DIR.dirname()
+TEST_DIR = TEST_DIR / 'test'
+
+DATA_DIR = TEST_DIR / 'data'
 
 
-def check_export_roundtrip(data_dir):
-    print "Starting import"
-    initial_import = XMLModuleStore('org', 'course', data_dir, eager=True)
-    initial_course = initial_import.course
+def strip_metadata(descriptor, key):
+    """
+    Recursively strips tag from all children.
+    """
+    print "strip {key} from {desc}".format(key=key, desc=descriptor.location.url())
+    descriptor.metadata.pop(key, None)
+    for d in descriptor.get_children():
+        strip_metadata(d, key)
 
-    print "Starting export"
-    export_dir = mkdtemp()
-    fs = OSFS(export_dir)
-    xml = initial_course.export_to_xml(fs)
-    with fs.open('course.xml', 'w') as course_xml:
-        course_xml.write(xml)
-
-    print "Starting second import"
-    second_import = XMLModuleStore('org', 'course', export_dir, eager=True)
-
-    print "Checking key equality"
-    assert_equals(initial_import.modules.keys(), second_import.modules.keys())
-
-    print "Checking module equality"
-    for location in initial_import.modules.keys():
-        print "Checking", location
-        assert_equals(initial_import.modules[location], second_import.modules[location])
+def strip_filenames(descriptor):
+    """
+    Recursively strips 'filename' from all children's definitions.
+    """
+    print "strip filename from {desc}".format(desc=descriptor.location.url())
+    descriptor.definition.pop('filename', None)
+    for d in descriptor.get_children():
+        strip_filenames(d)
 
 
-def test_toy_roundtrip():
-    dir = ""
-    # TODO: add paths and make this run.
-    raise SkipTest()
-    check_export_roundtrip(dir)
+
+class RoundTripTestCase(unittest.TestCase):
+    '''Check that our test courses roundtrip properly'''
+    def check_export_roundtrip(self, data_dir, course_dir):
+        print "Starting import"
+        initial_import = XMLModuleStore(data_dir, eager=True, course_dirs=[course_dir])
+
+        courses = initial_import.get_courses()
+        self.assertEquals(len(courses), 1)
+        initial_course = courses[0]
+
+        print "Starting export"
+        export_dir = mkdtemp()
+        print "export_dir: {0}".format(export_dir)
+        fs = OSFS(export_dir)
+        export_course_dir = 'export'
+        export_fs = fs.makeopendir(export_course_dir)
+
+        xml = initial_course.export_to_xml(export_fs)
+        with export_fs.open('course.xml', 'w') as course_xml:
+            course_xml.write(xml)
+
+        print "Starting second import"
+        second_import = XMLModuleStore(export_dir, eager=True,
+                                       course_dirs=[export_course_dir])
+
+        courses2 = second_import.get_courses()
+        self.assertEquals(len(courses2), 1)
+        exported_course = courses2[0]
+
+        print "Checking course equality"
+        # HACK: data_dir metadata tags break equality because they
+        # aren't real metadata, and depend on paths. Remove them.
+        strip_metadata(initial_course, 'data_dir')
+        strip_metadata(exported_course, 'data_dir')
+
+        # HACK: filenames change when changing file formats
+        # during imports from old-style courses.  Ignore them.
+        strip_filenames(initial_course)
+        strip_filenames(exported_course)
+
+        self.assertEquals(initial_course, exported_course)
+
+        print "Checking key equality"
+        self.assertEquals(sorted(initial_import.modules.keys()),
+                          sorted(second_import.modules.keys()))
+
+        print "Checking module equality"
+        for location in initial_import.modules.keys():
+            print "Checking", location
+            if location.category == 'html':
+                print ("Skipping html modules--they can't import in"
+                       " final form without writing files...")
+                continue
+            self.assertEquals(initial_import.modules[location],
+                              second_import.modules[location])
+
+
+    def setUp(self):
+        self.maxDiff = None
+
+    def test_toy_roundtrip(self):
+        self.check_export_roundtrip(DATA_DIR, "toy")
+
+    def test_simple_roundtrip(self):
+        self.check_export_roundtrip(DATA_DIR, "simple")
+
+    def test_full_roundtrip(self):
+        self.check_export_roundtrip(DATA_DIR, "full")
diff --git a/common/lib/xmodule/xmodule/tests/test_import.py b/common/lib/xmodule/xmodule/tests/test_import.py
index 0d3e2260fb..407057a4ab 100644
--- a/common/lib/xmodule/xmodule/tests/test_import.py
+++ b/common/lib/xmodule/xmodule/tests/test_import.py
@@ -5,6 +5,7 @@ from fs.memoryfs import MemoryFS
 from lxml import etree
 
 from xmodule.x_module import XMLParsingSystem, XModuleDescriptor
+from xmodule.xml_module import is_pointer_tag
 from xmodule.errortracker import make_error_tracker
 from xmodule.modulestore import Location
 from xmodule.modulestore.exceptions import ItemNotFoundError
@@ -46,22 +47,17 @@ class DummySystem(XMLParsingSystem):
             raise Exception("Shouldn't be called")
 
 
-
-
 class ImportTestCase(unittest.TestCase):
     '''Make sure module imports work properly, including for malformed inputs'''
-
-
     @staticmethod
     def get_system():
         '''Get a dummy system'''
         return DummySystem()
 
     def test_fallback(self):
-        '''Make sure that malformed xml loads as an ErrorDescriptor.'''
+        '''Check that malformed xml loads as an ErrorDescriptor.'''
 
         bad_xml = '''<sequential display_name="oops"><video url="hi"></sequential>'''
-
         system = self.get_system()
 
         descriptor = XModuleDescriptor.load_from_xml(bad_xml, system, 'org', 'course',
@@ -70,6 +66,22 @@ class ImportTestCase(unittest.TestCase):
         self.assertEqual(descriptor.__class__.__name__,
                          'ErrorDescriptor')
 
+
+    def test_unique_url_names(self):
+        '''Check that each error gets its very own url_name'''
+        bad_xml = '''<sequential display_name="oops"><video url="hi"></sequential>'''
+        bad_xml2 = '''<sequential url_name="oops"><video url="hi"></sequential>'''
+        system = self.get_system()
+
+        descriptor1 = XModuleDescriptor.load_from_xml(bad_xml, system, 'org',
+                                                      'course', None)
+
+        descriptor2 = XModuleDescriptor.load_from_xml(bad_xml2, system, 'org',
+                                                      'course', None)
+
+        self.assertNotEqual(descriptor1.location, descriptor2.location)
+
+
     def test_reimport(self):
         '''Make sure an already-exported error xml tag loads properly'''
 
@@ -111,30 +123,65 @@ class ImportTestCase(unittest.TestCase):
         xml_out = etree.fromstring(xml_str_out)
         self.assertEqual(xml_out.tag, 'sequential')
 
-    def test_metadata_inherit(self):
-        """Make sure metadata inherits properly"""
+    def test_metadata_import_export(self):
+        """Two checks:
+            - unknown metadata is preserved across import-export
+            - inherited metadata doesn't leak to children.
+        """
         system = self.get_system()
-        v = "1 hour"
-        start_xml = '''<course graceperiod="{grace}" url_name="test1" display_name="myseq">
-                      <chapter url="hi" url_name="ch" display_name="CH">
-                       <html url_name="h" display_name="H">Two houses, ...</html></chapter>
-                   </course>'''.format(grace=v)
+        v = '1 hour'
+        org = 'foo'
+        course = 'bbhh'
+        url_name = 'test1'
+        start_xml = '''
+        <course org="{org}" course="{course}"
+                graceperiod="{grace}" url_name="{url_name}" unicorn="purple">
+            <chapter url="hi" url_name="ch" display_name="CH">
+                <html url_name="h" display_name="H">Two houses, ...</html>
+            </chapter>
+        </course>'''.format(grace=v, org=org, course=course, url_name=url_name)
         descriptor = XModuleDescriptor.load_from_xml(start_xml, system,
-                                                     'org', 'course')
+                                                     org, course)
 
-        print "Errors: {0}".format(system.errorlog.errors)
         print descriptor, descriptor.metadata
         self.assertEqual(descriptor.metadata['graceperiod'], v)
+        self.assertEqual(descriptor.metadata['unicorn'], 'purple')
 
-        # Check that the child inherits correctly
+        # Check that the child inherits graceperiod correctly
         child = descriptor.get_children()[0]
         self.assertEqual(child.metadata['graceperiod'], v)
 
-        # Now export and see if the chapter tag has a graceperiod attribute
+        # check that the child does _not_ inherit any unicorns
+        self.assertTrue('unicorn' not in child.metadata)
+
+        # Now export and check things
         resource_fs = MemoryFS()
         exported_xml = descriptor.export_to_xml(resource_fs)
+
+        # Check that the exported xml is just a pointer
         print "Exported xml:", exported_xml
-        root = etree.fromstring(exported_xml)
-        chapter_tag = root[0]
-        self.assertEqual(chapter_tag.tag, 'chapter')
-        self.assertFalse('graceperiod' in chapter_tag.attrib)
+        pointer = etree.fromstring(exported_xml)
+        self.assertTrue(is_pointer_tag(pointer))
+        # but it's a special case course pointer
+        self.assertEqual(pointer.attrib['course'], course)
+        self.assertEqual(pointer.attrib['org'], org)
+
+        # Does the course still have unicorns?
+        with resource_fs.open('course/{url_name}.xml'.format(url_name=url_name)) as f:
+            course_xml = etree.fromstring(f.read())
+
+        self.assertEqual(course_xml.attrib['unicorn'], 'purple')
+
+        # the course and org tags should be _only_ in the pointer
+        self.assertTrue('course' not in course_xml.attrib)
+        self.assertTrue('org' not in course_xml.attrib)
+
+        # did we successfully strip the url_name from the definition contents?
+        self.assertTrue('url_name' not in course_xml.attrib)
+
+        # Does the chapter tag now have a graceperiod attribute?
+        # hardcoded path to child
+        with resource_fs.open('chapter/ch.xml') as f:
+            chapter_xml = etree.fromstring(f.read())
+        self.assertEqual(chapter_xml.tag, 'chapter')
+        self.assertFalse('graceperiod' in chapter_xml.attrib)
diff --git a/common/lib/xmodule/xmodule/util/__init__.py b/common/lib/xmodule/xmodule/util/__init__.py
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/common/lib/xmodule/xmodule/util/decorators.py b/common/lib/xmodule/xmodule/util/decorators.py
new file mode 100644
index 0000000000..81ab747a3e
--- /dev/null
+++ b/common/lib/xmodule/xmodule/util/decorators.py
@@ -0,0 +1,36 @@
+
+
+def lazyproperty(fn):
+    """
+    Use this decorator for lazy generation of properties that
+    are expensive to compute. From http://stackoverflow.com/a/3013910/86828
+    
+    
+    Example:
+    class Test(object):
+
+        @lazyproperty
+        def a(self):
+            print 'generating "a"'
+            return range(5)
+    
+    Interactive Session:
+    >>> t = Test()
+    >>> t.__dict__
+    {}
+    >>> t.a
+    generating "a"
+    [0, 1, 2, 3, 4]
+    >>> t.__dict__
+    {'_lazy_a': [0, 1, 2, 3, 4]}
+    >>> t.a
+    [0, 1, 2, 3, 4]
+    """
+    
+    attr_name = '_lazy_' + fn.__name__
+    @property
+    def _lazyprop(self):
+        if not hasattr(self, attr_name):
+            setattr(self, attr_name, fn(self))
+        return getattr(self, attr_name)
+    return _lazyprop
\ No newline at end of file
diff --git a/common/lib/xmodule/xmodule/x_module.py b/common/lib/xmodule/xmodule/x_module.py
index f013aac785..f8f7499911 100644
--- a/common/lib/xmodule/xmodule/x_module.py
+++ b/common/lib/xmodule/xmodule/x_module.py
@@ -6,6 +6,7 @@ from fs.errors import ResourceNotFoundError
 from functools import partial
 from lxml import etree
 from lxml.etree import XMLSyntaxError
+from pprint import pprint
 
 from xmodule.modulestore import Location
 from xmodule.errortracker import exc_info_to_str
@@ -550,9 +551,9 @@ class XModuleDescriptor(Plugin, HTMLSnippet):
 
         if not eq:
             for attr in self.equality_attributes:
-                print(getattr(self, attr, None),
-                      getattr(other, attr, None),
-                      getattr(self, attr, None) == getattr(other, attr, None))
+                pprint((getattr(self, attr, None),
+                       getattr(other, attr, None),
+                       getattr(self, attr, None) == getattr(other, attr, None)))
 
         return eq
 
@@ -643,7 +644,7 @@ class ModuleSystem(object):
                  user=None,
                  filestore=None,
                  debug=False,
-                 xqueue = None,
+                 xqueue=None,
                  is_staff=False):
         '''
         Create a closure around the system environment.
diff --git a/common/lib/xmodule/xmodule/xml_module.py b/common/lib/xmodule/xmodule/xml_module.py
index 7a12ed869d..c9fee6c9a5 100644
--- a/common/lib/xmodule/xmodule/xml_module.py
+++ b/common/lib/xmodule/xmodule/xml_module.py
@@ -11,22 +11,44 @@ import sys
 
 log = logging.getLogger(__name__)
 
-_AttrMapBase = namedtuple('_AttrMap', 'metadata_key to_metadata from_metadata')
+
+def is_pointer_tag(xml_obj):
+    """
+    Check if xml_obj is a pointer tag: <blah url_name="something" />.
+    No children, one attribute named url_name.
+
+    Special case for course roots: the pointer is
+      <course url_name="something" org="myorg"  course="course">
+
+    xml_obj: an etree Element
+
+    Returns a bool.
+    """
+    if xml_obj.tag != "course":
+        expected_attr = set(['url_name'])
+    else:
+        expected_attr = set(['url_name', 'course', 'org'])
+
+    actual_attr = set(xml_obj.attrib.keys())
+    return len(xml_obj) == 0 and actual_attr == expected_attr
+
+
+
+_AttrMapBase = namedtuple('_AttrMap', 'from_xml to_xml')
 
 class AttrMap(_AttrMapBase):
     """
-    A class that specifies a metadata_key, and two functions:
+    A class that specifies two functions:
 
-        to_metadata: convert value from the xml representation into
+        from_xml: convert value from the xml representation into
             an internal python representation
 
-        from_metadata: convert the internal python representation into
+        to_xml: convert the internal python representation into
             the value to store in the xml.
     """
-    def __new__(_cls, metadata_key,
-                to_metadata=lambda x: x,
-                from_metadata=lambda x: x):
-        return _AttrMapBase.__new__(_cls, metadata_key, to_metadata, from_metadata)
+    def __new__(_cls, from_xml=lambda x: x,
+                to_xml=lambda x: x):
+        return _AttrMapBase.__new__(_cls, from_xml, to_xml)
 
 
 class XmlDescriptor(XModuleDescriptor):
@@ -39,19 +61,28 @@ class XmlDescriptor(XModuleDescriptor):
 
     # The attributes will be removed from the definition xml passed
     # to definition_from_xml, and from the xml returned by definition_to_xml
+
+    # Note -- url_name isn't in this list because it's handled specially on
+    # import and export.
+
+    # TODO (vshnayder): Do we need a list of metadata we actually
+    # understand?  And if we do, is this the place?
+    # Related: What's the right behavior for clean_metadata?
     metadata_attributes = ('format', 'graceperiod', 'showanswer', 'rerandomize',
         'start', 'due', 'graded', 'display_name', 'url_name', 'hide_from_toc',
-        'ispublic', 	# if True, then course is listed for all users; see 
+        'ispublic', 	# if True, then course is listed for all users; see
         # VS[compat] Remove once unused.
         'name', 'slug')
 
+    metadata_to_strip = ('data_dir',
+           # VS[compat] -- remove the below attrs once everything is in the CMS
+           'course', 'org', 'url_name', 'filename')
 
     # A dictionary mapping xml attribute names AttrMaps that describe how
     # to import and export them
     xml_attribute_map = {
         # type conversion: want True/False in python, "true"/"false" in xml
-        'graded': AttrMap('graded',
-                          lambda val: val == 'true',
+        'graded': AttrMap(lambda val: val == 'true',
                           lambda val: str(val).lower()),
     }
 
@@ -101,12 +132,32 @@ class XmlDescriptor(XModuleDescriptor):
         """
         return etree.parse(file_object).getroot()
 
+    @classmethod
+    def load_file(cls, filepath, fs, location):
+        '''
+        Open the specified file in fs, and call cls.file_to_xml on it,
+        returning the lxml object.
+
+        Add details and reraise on error.
+        '''
+        try:
+            with fs.open(filepath) as file:
+                return cls.file_to_xml(file)
+        except Exception as err:
+            # Add info about where we are, but keep the traceback
+            msg = 'Unable to load file contents at path %s for item %s: %s ' % (
+                filepath, location.url(), str(err))
+            raise Exception, msg, sys.exc_info()[2]
+
+
     @classmethod
     def load_definition(cls, xml_object, system, location):
         '''Load a descriptor definition from the specified xml_object.
         Subclasses should not need to override this except in special
         cases (e.g. html module)'''
 
+        # VS[compat] -- the filename tag should go away once everything is
+        # converted.  (note: make sure html files still work once this goes away)
         filename = xml_object.get('filename')
         if filename is None:
             definition_xml = copy.deepcopy(xml_object)
@@ -120,22 +171,14 @@ class XmlDescriptor(XModuleDescriptor):
             # again in the correct format.  This should go away once the CMS is
             # online and has imported all current (fall 2012) courses from xml
             if not system.resources_fs.exists(filepath) and hasattr(
-                    cls,
-                    'backcompat_paths'):
+                    cls, 'backcompat_paths'):
                 candidates = cls.backcompat_paths(filepath)
                 for candidate in candidates:
                     if system.resources_fs.exists(candidate):
                         filepath = candidate
                         break
 
-            try:
-                with system.resources_fs.open(filepath) as file:
-                    definition_xml = cls.file_to_xml(file)
-            except Exception:
-                msg = 'Unable to load file contents at path %s for item %s' % (
-                    filepath, location.url())
-                # Add info about where we are, but keep the traceback
-                raise Exception, msg, sys.exc_info()[2]
+            definition_xml = cls.load_file(filepath, system.resources_fs, location)
 
         cls.clean_metadata_from_xml(definition_xml)
         definition = cls.definition_from_xml(definition_xml, system)
@@ -146,6 +189,28 @@ class XmlDescriptor(XModuleDescriptor):
 
         return definition
 
+    @classmethod
+    def load_metadata(cls, xml_object):
+        """
+        Read the metadata attributes from this xml_object.
+
+        Returns a dictionary {key: value}.
+        """
+        metadata = {}
+        for attr in xml_object.attrib:
+            val = xml_object.get(attr)
+            if val is not None:
+                # VS[compat].  Remove after all key translations done
+                attr = cls._translate(attr)
+
+                if attr in cls.metadata_to_strip:
+                    # don't load these
+                    continue
+
+                attr_map = cls.xml_attribute_map.get(attr, AttrMap())
+                metadata[attr] = attr_map.from_xml(val)
+        return metadata
+
 
     @classmethod
     def from_xml(cls, xml_data, system, org=None, course=None):
@@ -160,26 +225,27 @@ class XmlDescriptor(XModuleDescriptor):
             url identifiers
         """
         xml_object = etree.fromstring(xml_data)
-        # VS[compat] -- just have the url_name lookup once translation is done
-        slug = xml_object.get('url_name', xml_object.get('slug'))
-        location = Location('i4x', org, course, xml_object.tag, slug)
+        # VS[compat] -- just have the url_name lookup, once translation is done
+        url_name = xml_object.get('url_name', xml_object.get('slug'))
+        location = Location('i4x', org, course, xml_object.tag, url_name)
 
-        def load_metadata():
-            metadata = {}
-            for attr in cls.metadata_attributes:
-                val = xml_object.get(attr)
-                if val is not None:
-                    # VS[compat].  Remove after all key translations done
-                    attr = cls._translate(attr)
+        # VS[compat] -- detect new-style each-in-a-file mode
+        if is_pointer_tag(xml_object):
+            # new style:
+            # read the actual definition file--named using url_name
+            filepath = cls._format_filepath(xml_object.tag, url_name)
+            definition_xml = cls.load_file(filepath, system.resources_fs, location)
+        else:
+            definition_xml = xml_object
 
-                    attr_map = cls.xml_attribute_map.get(attr, AttrMap(attr))
-                    metadata[attr_map.metadata_key] = attr_map.to_metadata(val)
-            return metadata
+        definition = cls.load_definition(definition_xml, system, location)
+        # VS[compat] -- make Ike's github preview links work in both old and
+        # new file layouts
+        if is_pointer_tag(xml_object):
+            # new style -- contents actually at filepath
+            definition['filename'] = [filepath, filepath]
 
-        definition = cls.load_definition(xml_object, system, location)
-        metadata = load_metadata()
-        # VS[compat] -- just have the url_name lookup once translation is done
-        slug = xml_object.get('url_name', xml_object.get('slug'))
+        metadata = cls.load_metadata(definition_xml)
         return cls(
             system,
             definition,
@@ -193,20 +259,6 @@ class XmlDescriptor(XModuleDescriptor):
                                                  name=name,
                                                  ext=cls.filename_extension)
 
-    @classmethod
-    def split_to_file(cls, xml_object):
-        '''
-        Decide whether to write this object to a separate file or not.
-
-        xml_object: an xml definition of an instance of cls.
-
-        This default implementation will split if this has more than 7
-        descendant tags.
-
-        Can be overridden by subclasses.
-        '''
-        return len(list(xml_object.iter())) > 7
-
     def export_to_xml(self, resource_fs):
         """
         Returns an xml string representing this module, and all modules
@@ -227,42 +279,39 @@ class XmlDescriptor(XModuleDescriptor):
         xml_object = self.definition_to_xml(resource_fs)
         self.__class__.clean_metadata_from_xml(xml_object)
 
-        # Set the tag first, so it's right if writing to a file
+        # Set the tag so we get the file path right
         xml_object.tag = self.category
 
-        # Write it to a file if necessary
-        if self.split_to_file(xml_object):
-            # Put this object in its own file
-            filepath = self.__class__._format_filepath(self.category, self.url_name)
-            resource_fs.makedir(os.path.dirname(filepath), allow_recreate=True)
-            with resource_fs.open(filepath, 'w') as file:
-                file.write(etree.tostring(xml_object, pretty_print=True))
-            # ...and remove all of its children here
-            for child in xml_object:
-                xml_object.remove(child)
-            # also need to remove the text of this object.
-            xml_object.text = ''
-            # and the tail for good measure...
-            xml_object.tail = ''
+        def val_for_xml(attr):
+            """Get the value for this attribute that we want to store.
+            (Possible format conversion through an AttrMap).
+             """
+            attr_map = self.xml_attribute_map.get(attr, AttrMap())
+            return attr_map.to_xml(self.own_metadata[attr])
 
+        # Add the non-inherited metadata
+        for attr in sorted(self.own_metadata):
+            # don't want e.g. data_dir
+            if attr not in self.metadata_to_strip:
+                xml_object.set(attr, val_for_xml(attr))
 
-            xml_object.set('filename', self.url_name)
+        # Write the definition to a file
+        filepath = self.__class__._format_filepath(self.category, self.url_name)
+        resource_fs.makedir(os.path.dirname(filepath), allow_recreate=True)
+        with resource_fs.open(filepath, 'w') as file:
+            file.write(etree.tostring(xml_object, pretty_print=True))
 
-        # Add the metadata
-        xml_object.set('url_name', self.url_name)
-        for attr in self.metadata_attributes:
-            attr_map = self.xml_attribute_map.get(attr, AttrMap(attr))
-            metadata_key = attr_map.metadata_key
+        # And return just a pointer with the category and filename.
+        record_object = etree.Element(self.category)
+        record_object.set('url_name', self.url_name)
 
-            if (metadata_key not in self.metadata or
-                metadata_key in self._inherited_metadata):
-                continue
+        # Special case for course pointers:
+        if self.category == 'course':
+            # add org and course attributes on the pointer tag
+            record_object.set('org', self.location.org)
+            record_object.set('course', self.location.course)
 
-            val = attr_map.from_metadata(self.metadata[metadata_key])
-            xml_object.set(attr, val)
-
-        # Now we just have to make it beautiful
-        return etree.tostring(xml_object, pretty_print=True)
+        return etree.tostring(record_object, pretty_print=True)
 
     def definition_to_xml(self, resource_fs):
         """
diff --git a/common/test/data/simple/course.xml b/common/test/data/simple/course.xml
index b92158cdb7..86dc8df45c 100644
--- a/common/test/data/simple/course.xml
+++ b/common/test/data/simple/course.xml
@@ -2,7 +2,7 @@
   <chapter name="Overview">
     <video name="Welcome" youtube="0.75:izygArpw-Qo,1.0:p2Q6BrNhdh8,1.25:1EeWXzPdhSA,1.50:rABDYkeK0x8"/>
     <videosequence format="Lecture Sequence" name="A simple sequence">
-      <html id="toylab" filename="toylab"/>
+      <html name="toylab" filename="toylab"/>
       <video name="S0V1: Video Resources" youtube="0.75:EuzkdzfR0i8,1.0:1bK-WdDi6Qw,1.25:0v1VzoDVUTM,1.50:Bxk_-ZJb240"/>
     </videosequence>
     <section name="Lecture 2">
@@ -15,7 +15,7 @@
   <chapter name="Chapter 2">
     <section name="Problem Set 1">
       <sequential>
-        <problem type="lecture" showanswer="attempted" rerandomize="true" title="A simple coding problem" name="Simple coding problem" filename="ps01-simple"/>
+        <problem type="lecture" showanswer="attempted" rerandomize="true" display_name="A simple coding problem" name="Simple coding problem" filename="ps01-simple"/>
       </sequential>
     </section>
     <video name="Lost Video" youtube="1.0:TBvX7HzxexQ"/>
diff --git a/common/test/data/simple/problems/L1_Problem_1.xml b/common/test/data/simple/problem/L1_Problem_1.xml
similarity index 100%
rename from common/test/data/simple/problems/L1_Problem_1.xml
rename to common/test/data/simple/problem/L1_Problem_1.xml
diff --git a/common/test/data/simple/problems/ps01-simple.xml b/common/test/data/simple/problem/ps01-simple.xml
similarity index 100%
rename from common/test/data/simple/problems/ps01-simple.xml
rename to common/test/data/simple/problem/ps01-simple.xml
diff --git a/doc/development.md b/doc/development.md
index 5b8e6fd837..9d6628732a 100644
--- a/doc/development.md
+++ b/doc/development.md
@@ -28,3 +28,18 @@ Check out the course data directories that you want to work with into the
 Replace `../data` with your `GITHUB_REPO_ROOT` if it's not the default value.
 
 This will import all courses in your data directory into mongodb
+
+## Unit tests
+
+This runs all the tests (long, uses collectstatic):
+
+    rake test
+    
+xmodule can be tested independently, with this:
+
+    rake test_common/lib/xmodule
+    
+To see all available rake commands, do this:
+
+    rake -T
+    
\ No newline at end of file
diff --git a/lms/djangoapps/certificates/views.py b/lms/djangoapps/certificates/views.py
index 6341133c52..472215ab5c 100644
--- a/lms/djangoapps/certificates/views.py
+++ b/lms/djangoapps/certificates/views.py
@@ -52,7 +52,7 @@ def certificate_request(request):
             return return_error(survey_response['error'])
 
         grade = None
-        student_gradesheet = grades.grade_sheet(request.user)
+        student_gradesheet = grades.grade(request.user, request, course)
         grade = student_gradesheet['grade']
 
         if not grade:
@@ -65,7 +65,7 @@ def certificate_request(request):
     else:
         #This is not a POST, we should render the page with the form
 
-        grade_sheet = grades.grade_sheet(request.user)
+        student_gradesheet = grades.grade(request.user, request, course)
         certificate_state = certificate_state_for_student(request.user, grade_sheet['grade'])
 
         if certificate_state['state'] != "requestable":
diff --git a/lms/djangoapps/courseware/courses.py b/lms/djangoapps/courseware/courses.py
index 8193988d67..5312a38584 100644
--- a/lms/djangoapps/courseware/courses.py
+++ b/lms/djangoapps/courseware/courses.py
@@ -46,12 +46,15 @@ def check_course(course_id, course_must_be_open=True, course_required=True):
 
 
 def course_image_url(course):
-    return staticfiles_storage.url(course.metadata['data_dir'] + "/images/course_image.jpg")
+    return staticfiles_storage.url(course.metadata['data_dir'] +
+                                   "/images/course_image.jpg")
 
 
 def get_course_about_section(course, section_key):
     """
-    This returns the snippet of html to be rendered on the course about page, given the key for the section.
+    This returns the snippet of html to be rendered on the course about page,
+    given the key for the section.
+
     Valid keys:
     - overview
     - title
@@ -70,18 +73,23 @@ def get_course_about_section(course, section_key):
     - more_info
     """
 
-    # Many of these are stored as html files instead of some semantic markup. This can change without effecting
-    # this interface when we find a good format for defining so many snippets of text/html.
+    # Many of these are stored as html files instead of some semantic
+    # markup. This can change without effecting this interface when we find a
+    # good format for defining so many snippets of text/html.
 
 # TODO: Remove number, instructors from this list
-    if section_key in ['short_description', 'description', 'key_dates', 'video', 'course_staff_short', 'course_staff_extended',
-                        'requirements', 'syllabus', 'textbook', 'faq', 'more_info', 'number', 'instructors', 'overview',
-                        'effort', 'end_date', 'prerequisites']:
+    if section_key in ['short_description', 'description', 'key_dates', 'video',
+                       'course_staff_short', 'course_staff_extended',
+                       'requirements', 'syllabus', 'textbook', 'faq', 'more_info',
+                       'number', 'instructors', 'overview',
+                       'effort', 'end_date', 'prerequisites']:
         try:
             with course.system.resources_fs.open(path("about") / section_key + ".html") as htmlFile:
-                return replace_urls(htmlFile.read().decode('utf-8'), course.metadata['data_dir'])
+                return replace_urls(htmlFile.read().decode('utf-8'),
+                                    course.metadata['data_dir'])
         except ResourceNotFoundError:
-            log.warning("Missing about section {key} in course {url}".format(key=section_key, url=course.location.url()))
+            log.warning("Missing about section {key} in course {url}".format(
+                key=section_key, url=course.location.url()))
             return None
     elif section_key == "title":
         return course.metadata.get('display_name', course.url_name)
@@ -95,7 +103,9 @@ def get_course_about_section(course, section_key):
 
 def get_course_info_section(course, section_key):
     """
-    This returns the snippet of html to be rendered on the course info page, given the key for the section.
+    This returns the snippet of html to be rendered on the course info page,
+    given the key for the section.
+
     Valid keys:
     - handouts
     - guest_handouts
@@ -103,43 +113,51 @@ def get_course_info_section(course, section_key):
     - guest_updates
     """
 
-    # Many of these are stored as html files instead of some semantic markup. This can change without effecting
-    # this interface when we find a good format for defining so many snippets of text/html.
+    # Many of these are stored as html files instead of some semantic
+    # markup. This can change without effecting this interface when we find a
+    # good format for defining so many snippets of text/html.
 
     if section_key in ['handouts', 'guest_handouts', 'updates', 'guest_updates']:
         try:
             with course.system.resources_fs.open(path("info") / section_key + ".html") as htmlFile:
-                return replace_urls(htmlFile.read().decode('utf-8'), course.metadata['data_dir'])
+                return replace_urls(htmlFile.read().decode('utf-8'),
+                                    course.metadata['data_dir'])
         except ResourceNotFoundError:
-            log.exception("Missing info section {key} in course {url}".format(key=section_key, url=course.location.url()))
+            log.exception("Missing info section {key} in course {url}".format(
+                key=section_key, url=course.location.url()))
             return "! Info section missing !"
 
     raise KeyError("Invalid about key " + str(section_key))
 
 def course_staff_group_name(course):
     '''
-    course should be either a CourseDescriptor instance, or a string (the .course entry of a Location)
+    course should be either a CourseDescriptor instance, or a string (the
+    .course entry of a Location)
     '''
-    if isinstance(course,str):
+    if isinstance(course, str) or isinstance(course, unicode):
         coursename = course
     else:
-        coursename = course.metadata.get('data_dir','UnknownCourseName')
-    if not coursename:					# Fall 2012: not all course.xml have metadata correct yet
-        coursename = course.metadata.get('course','')
+        # should be a CourseDescriptor, so grab its location.course:
+        coursename = course.location.course
     return 'staff_%s' % coursename
 
-def has_staff_access_to_course(user,course):
+def has_staff_access_to_course(user, course):
     '''
     Returns True if the given user has staff access to the course.
     This means that user is in the staff_* group, or is an overall admin.
+
+    course is the course field of the location being accessed.
     '''
     if user is None or (not user.is_authenticated()) or course is None:
         return False
     if user.is_staff:
         return True
-    user_groups = [x[1] for x in user.groups.values_list()]	# note this is the Auth group, not UserTestGroup
+
+    # note this is the Auth group, not UserTestGroup
+    user_groups = [x[1] for x in user.groups.values_list()]
     staff_group = course_staff_group_name(course)
-    log.debug('course %s user %s groups %s' % (staff_group, user, user_groups))
+    log.debug('course %s, staff_group %s, user %s, groups %s' % (
+        course, staff_group, user, user_groups))
     if staff_group in user_groups:
         return True
     return False
@@ -154,7 +172,8 @@ def get_courses_by_university(user):
     Returns dict of lists of courses available, keyed by course.org (ie university).
     Courses are sorted by course.number.
 
-    if ACCESS_REQUIRE_STAFF_FOR_COURSE then list only includes those accessible to user.
+    if ACCESS_REQUIRE_STAFF_FOR_COURSE then list only includes those accessible
+    to user.
     '''
     # TODO: Clean up how 'error' is done.
     # filter out any courses that errored.
@@ -163,9 +182,9 @@ def get_courses_by_university(user):
     courses = sorted(courses, key=lambda course: course.number)
     universities = defaultdict(list)
     for course in courses:
-        if settings.MITX_FEATURES.get('ENABLE_LMS_MIGRATION'):
+        if settings.MITX_FEATURES.get('ACCESS_REQUIRE_STAFF_FOR_COURSE'):
             if not has_access_to_course(user,course):
                 continue
         universities[course.org].append(course)
     return universities
-    
+
diff --git a/lms/djangoapps/courseware/grades.py b/lms/djangoapps/courseware/grades.py
index 6e7a0ce102..925b8429c6 100644
--- a/lms/djangoapps/courseware/grades.py
+++ b/lms/djangoapps/courseware/grades.py
@@ -3,26 +3,135 @@ import logging
 
 from django.conf import settings
 
+from models import StudentModuleCache
+from module_render import get_module, get_instance_module
 from xmodule import graders
 from xmodule.graders import Score
 from models import StudentModule
 
-_log = logging.getLogger("mitx.courseware")
+log = logging.getLogger("mitx.courseware")
 
-
-def grade_sheet(student, course, grader, student_module_cache):
+def yield_module_descendents(module):
+    for child in module.get_display_items():
+        yield child
+        for module in yield_module_descendents(child):
+            yield module
+   
+def grade(student, request, course, student_module_cache=None):
     """
-    This pulls a summary of all problems in the course. It returns a dictionary
-    with two datastructures:
+    This grades a student as quickly as possible. It retuns the 
+    output from the course grader, augmented with the final letter
+    grade. The keys in the output are:
+    
+    - grade : A final letter grade.
+    - percent : The final percent for the class (rounded up).
+    - section_breakdown : A breakdown of each section that makes
+        up the grade. (For display)
+    - grade_breakdown : A breakdown of the major components that
+        make up the final grade. (For display)
+    
+    More information on the format is in the docstring for CourseGrader.
+    """
+    
+    grading_context = course.grading_context
+    
+    if student_module_cache == None:
+        student_module_cache = StudentModuleCache(student, grading_context['all_descriptors'])
+    
+    totaled_scores = {}
+    # This next complicated loop is just to collect the totaled_scores, which is
+    # passed to the grader
+    for section_format, sections in grading_context['graded_sections'].iteritems():
+        format_scores = []
+        for section in sections:
+            section_descriptor = section['section_descriptor']
+            section_name = section_descriptor.metadata.get('display_name')
+            
+            should_grade_section = False
+            # If we haven't seen a single problem in the section, we don't have to grade it at all! We can assume 0%
+            for moduledescriptor in section['xmoduledescriptors']:
+                if student_module_cache.lookup(moduledescriptor.category, moduledescriptor.location.url() ):
+                    should_grade_section = True
+                    break
+            
+            if should_grade_section:
+                scores = []
+                # TODO: We need the request to pass into here. If we could forgo that, our arguments
+                # would be simpler
+                section_module = get_module(student, request, section_descriptor.location, student_module_cache)
+                
+                # TODO: We may be able to speed this up by only getting a list of children IDs from section_module
+                # Then, we may not need to instatiate any problems if they are already in the database
+                for module in yield_module_descendents(section_module):                    
+                    (correct, total) = get_score(student, module, student_module_cache)
+                    if correct is None and total is None:
+                        continue
+                    
+                    if settings.GENERATE_PROFILE_SCORES:
+                        if total > 1:
+                            correct = random.randrange(max(total - 2, 1), total + 1)
+                        else:
+                            correct = total
+                    
+                    graded = module.metadata.get("graded", False)
+                    if not total > 0:
+                        #We simply cannot grade a problem that is 12/0, because we might need it as a percentage
+                        graded = False
+                    
+                    scores.append(Score(correct, total, graded, module.metadata.get('display_name')))
+                    
+                section_total, graded_total = graders.aggregate_scores(scores, section_name)
+            else:
+                section_total = Score(0.0, 1.0, False, section_name)
+                graded_total = Score(0.0, 1.0, True, section_name)
+                
+            #Add the graded total to totaled_scores
+            if graded_total.possible > 0:
+                format_scores.append(graded_total)
+            else:
+                log.exception("Unable to grade a section with a total possible score of zero. " + str(section_descriptor.id))
+        
+        totaled_scores[section_format] = format_scores
+    
+    grade_summary = course.grader.grade(totaled_scores)
+    
+    # We round the grade here, to make sure that the grade is an whole percentage and
+    # doesn't get displayed differently than it gets grades
+    grade_summary['percent'] = round(grade_summary['percent'] * 100 + 0.05) / 100
+    
+    letter_grade = grade_for_percentage(course.grade_cutoffs, grade_summary['percent'])
+    grade_summary['grade'] = letter_grade
+    
+    return grade_summary
 
-    - courseware_summary is a summary of all sections with problems in the
-    course. It is organized as an array of chapters, each containing an array of
-    sections, each containing an array of scores. This contains information for
-    graded and ungraded problems, and is good for displaying a course summary
-    with due dates, etc.
+def grade_for_percentage(grade_cutoffs, percentage):
+    """
+    Returns a letter grade 'A' 'B' 'C' or None.
+    
+    Arguments
+    - grade_cutoffs is a dictionary mapping a grade to the lowest
+        possible percentage to earn that grade.
+    - percentage is the final percent across all problems in a course
+    """
+    
+    letter_grade = None
+    for possible_grade in ['A', 'B', 'C']:
+        if percentage >= grade_cutoffs[possible_grade]:
+            letter_grade = possible_grade
+            break
+    
+    return letter_grade  
 
-    - grade_summary is the output from the course grader. More information on
-      the format is in the docstring for CourseGrader.
+def progress_summary(student, course, grader, student_module_cache):
+    """
+    This pulls a summary of all problems in the course.
+
+    Returns
+    - courseware_summary is a summary of all sections with problems in the course. 
+    It is organized as an array of chapters, each containing an array of sections, 
+    each containing an array of scores. This contains information for graded and 
+    ungraded problems, and is good for displaying a course summary with due dates, 
+    etc.
 
     Arguments:
         student: A User object for the student to grade
@@ -30,49 +139,24 @@ def grade_sheet(student, course, grader, student_module_cache):
         student_module_cache: A StudentModuleCache initialized with all
              instance_modules for the student
     """
-    totaled_scores = {}
     chapters = []
     for c in course.get_children():
         sections = []
         for s in c.get_children():
-            def yield_descendents(module):
-                yield module
-                for child in module.get_display_items():
-                    for module in yield_descendents(child):
-                        yield module
-
             graded = s.metadata.get('graded', False)
             scores = []
-            for module in yield_descendents(s):
+            for module in yield_module_descendents(s):
                 (correct, total) = get_score(student, module, student_module_cache)
-
                 if correct is None and total is None:
                     continue
 
-                if settings.GENERATE_PROFILE_SCORES:
-                    if total > 1:
-                        correct = random.randrange(max(total - 2, 1), total + 1)
-                    else:
-                        correct = total
-
-                if not total > 0:
-                    #We simply cannot grade a problem that is 12/0, because we
-                    #might need it as a percentage
-                    graded = False
-
-                scores.append(Score(correct, total, graded,
-                                    module.metadata.get('display_name')))
+                scores.append(Score(correct, total, graded, 
+                    module.metadata.get('display_name')))
 
             section_total, graded_total = graders.aggregate_scores(
                 scores, s.metadata.get('display_name'))
 
-            #Add the graded total to totaled_scores
             format = s.metadata.get('format', "")
-            if format and graded_total.possible > 0:
-                format_scores = totaled_scores.get(format, [])
-                format_scores.append(graded_total)
-                totaled_scores[format] = format_scores
-
             sections.append({
                 'display_name': s.display_name,
                 'url_name': s.url_name,
@@ -88,13 +172,10 @@ def grade_sheet(student, course, grader, student_module_cache):
                          'url_name': c.url_name,
                          'sections': sections})
 
-    grade_summary = grader.grade(totaled_scores)
-
-    return {'courseware_summary': chapters,
-            'grade_summary': grade_summary}
+    return chapters
 
 
-def get_score(user, problem, cache):
+def get_score(user, problem, student_module_cache):
     """
     Return the score for a user on a problem
 
@@ -105,17 +186,18 @@ def get_score(user, problem, cache):
     correct = 0.0
 
     # If the ID is not in the cache, add the item
-    instance_module = cache.lookup(problem.category, problem.id)
-    if instance_module is None:
-        instance_module = StudentModule(module_type=problem.category,
-                                        module_state_key=problem.id,
-                                        student=user,
-                                        state=None,
-                                        grade=0,
-                                        max_grade=problem.max_score(),
-                                        done='i')
-        cache.append(instance_module)
-        instance_module.save()
+    instance_module = get_instance_module(user, problem, student_module_cache)
+    # instance_module = student_module_cache.lookup(problem.category, problem.id)
+    # if instance_module is None:
+    #     instance_module = StudentModule(module_type=problem.category,
+    #                                     module_state_key=problem.id,
+    #                                     student=user,
+    #                                     state=None,
+    #                                     grade=0,
+    #                                     max_grade=problem.max_score(),
+    #                                     done='i')
+    #     cache.append(instance_module)
+    #     instance_module.save()
 
     # If this problem is ungraded/ungradable, bail
     if instance_module.max_grade is None:
@@ -126,8 +208,11 @@ def get_score(user, problem, cache):
 
     if correct is not None and total is not None:
         #Now we re-weight the problem, if specified
-        weight = getattr(problem, 'weight', 1)
-        if weight != 1:
+        weight = getattr(problem, 'weight', None)
+        if weight is not None:
+            if total == 0:
+                log.exception("Cannot reweight a problem with zero weight. Problem: " + str(instance_module))
+                return (correct, total)
             correct = correct * weight / total
             total = weight
 
diff --git a/lms/djangoapps/courseware/management/commands/check_course.py b/lms/djangoapps/courseware/management/commands/check_course.py
index 6ccd6d5fe7..80f4b57983 100644
--- a/lms/djangoapps/courseware/management/commands/check_course.py
+++ b/lms/djangoapps/courseware/management/commands/check_course.py
@@ -78,8 +78,8 @@ class Command(BaseCommand):
 
         # TODO (cpennington): Get coursename in a legitimate way
         course_location = 'i4x://edx/6002xs12/course/6.002_Spring_2012'
-        student_module_cache = StudentModuleCache(sample_user, modulestore().get_item(course_location))
-        (course, _, _, _) = get_module(sample_user, None, course_location, student_module_cache)
+        student_module_cache = StudentModuleCache.cache_for_descriptor_descendents(sample_user, modulestore().get_item(course_location))
+        course = get_module(sample_user, None, course_location, student_module_cache)
 
         to_run = [
             #TODO (vshnayder) : make check_rendering work (use module_render.py),
diff --git a/lms/djangoapps/courseware/models.py b/lms/djangoapps/courseware/models.py
index 3b0ca7fdcf..631a750643 100644
--- a/lms/djangoapps/courseware/models.py
+++ b/lms/djangoapps/courseware/models.py
@@ -67,17 +67,19 @@ class StudentModuleCache(object):
     """
     A cache of StudentModules for a specific student
     """
-    def __init__(self, user, descriptor, depth=None):
+    def __init__(self, user, descriptors):
         '''
         Find any StudentModule objects that are needed by any child modules of the
-        supplied descriptor. Avoids making multiple queries to the database
-
-        descriptor: An XModuleDescriptor
-        depth is the number of levels of descendent modules to load StudentModules for, in addition to
-            the supplied descriptor. If depth is None, load all descendent StudentModules
+        supplied descriptor, or caches only the StudentModule objects specifically
+        for every descriptor in descriptors. Avoids making multiple queries to the 
+        database.
+        
+        Arguments
+        user: The user for which to fetch maching StudentModules
+        descriptors: An array of XModuleDescriptors.
         '''
         if user.is_authenticated():
-            module_ids = self._get_module_state_keys(descriptor, depth)
+            module_ids = self._get_module_state_keys(descriptors) 
 
             # This works around a limitation in sqlite3 on the number of parameters
             # that can be put into a single query
@@ -91,27 +93,52 @@ class StudentModuleCache(object):
 
         else:
             self.cache = []
-
-    def _get_module_state_keys(self, descriptor, depth):
-        '''
-        Get a list of the state_keys needed for StudentModules
-        required for this module descriptor
-
+    
+    
+    @classmethod
+    def cache_for_descriptor_descendents(cls, user, descriptor, depth=None, descriptor_filter=lambda descriptor: True):
+        """
         descriptor: An XModuleDescriptor
         depth is the number of levels of descendent modules to load StudentModules for, in addition to
             the supplied descriptor. If depth is None, load all descendent StudentModules
+        descriptor_filter is a function that accepts a descriptor and return wether the StudentModule 
+            should be cached
+        """
+        
+        def get_child_descriptors(descriptor, depth, descriptor_filter):
+            if descriptor_filter(descriptor):
+                descriptors = [descriptor]
+            else:
+                descriptors = []
+            
+            if depth is None or depth > 0:
+                new_depth = depth - 1 if depth is not None else depth
+
+                for child in descriptor.get_children():
+                    descriptors.extend(get_child_descriptors(child, new_depth, descriptor_filter))
+                
+            return descriptors
+        
+        
+        descriptors = get_child_descriptors(descriptor, depth, descriptor_filter)
+        
+        return StudentModuleCache(user, descriptors)    
+    
+    def _get_module_state_keys(self, descriptors):
         '''
-        keys = [descriptor.location.url()]
-
-        shared_state_key = getattr(descriptor, 'shared_state_key', None)
-        if shared_state_key is not None:
-            keys.append(shared_state_key)
-
-        if depth is None or depth > 0:
-            new_depth = depth - 1 if depth is not None else depth
-
-            for child in descriptor.get_children():
-                keys.extend(self._get_module_state_keys(child, new_depth))
+        Get a list of the state_keys needed for StudentModules
+        required for this module descriptor
+        
+        descriptor_filter is a function that accepts a descriptor and return wether the StudentModule 
+            should be cached
+        '''
+        keys = []
+        for descriptor in descriptors:
+            keys.append(descriptor.location.url())
+            
+            shared_state_key = getattr(descriptor, 'shared_state_key', None)
+            if shared_state_key is not None:
+                keys.append(shared_state_key)
 
         return keys
 
diff --git a/lms/djangoapps/courseware/module_render.py b/lms/djangoapps/courseware/module_render.py
index 1747e06b01..c5a482eb8b 100644
--- a/lms/djangoapps/courseware/module_render.py
+++ b/lms/djangoapps/courseware/module_render.py
@@ -50,9 +50,9 @@ def toc_for_course(user, request, course, active_chapter, active_section):
 
     chapters with name 'hidden' are skipped.
     '''
-
-    student_module_cache = StudentModuleCache(user, course, depth=2)
-    (course, _, _, _) = get_module(user, request, course.location, student_module_cache)
+    
+    student_module_cache = StudentModuleCache.cache_for_descriptor_descendents(user, course, depth=2)
+    course = get_module(user, request, course.location, student_module_cache)
 
     chapters = list()
     for chapter in course.get_display_items():
@@ -121,25 +121,26 @@ def get_module(user, request, location, student_module_cache, position=None):
       - position              : extra information from URL for user-specified
                                 position within module
 
-    Returns:
-      - a tuple (xmodule instance, instance_module, shared_module, module category).
-        instance_module is a StudentModule specific to this module for this student,
-            or None if this is an anonymous user
-        shared_module is a StudentModule specific to all modules with the same
-            'shared_state_key' attribute, or None if the module does not elect to
-            share state
+    Returns: xmodule instance
+    
     '''
     descriptor = modulestore().get_item(location)
-
-    instance_module = student_module_cache.lookup(descriptor.category,
-                                                  descriptor.location.url())
-
-    shared_state_key = getattr(descriptor, 'shared_state_key', None)
-    if shared_state_key is not None:
-        shared_module = student_module_cache.lookup(descriptor.category,
-                                                    shared_state_key)
+    
+    #TODO Only check the cache if this module can possibly have state
+    if user.is_authenticated():
+        instance_module = student_module_cache.lookup(descriptor.category,
+                                              descriptor.location.url())
+        
+        shared_state_key = getattr(descriptor, 'shared_state_key', None)
+        if shared_state_key is not None:
+            shared_module = student_module_cache.lookup(descriptor.category,
+                                                        shared_state_key)
+        else:
+            shared_module = None
     else:
+        instance_module = None
         shared_module = None
+        
 
     instance_state = instance_module.state if instance_module is not None else {}
     shared_state = shared_module.state if shared_module is not None else None
@@ -163,9 +164,8 @@ def get_module(user, request, location, student_module_cache, position=None):
                'default_queuename': xqueue_default_queuename.replace(' ','_') }
 
     def _get_module(location):
-        (module, _, _, _) = get_module(user, request, location,
+        return get_module(user, request, location,
                                        student_module_cache, position)
-        return module
 
     # TODO (cpennington): When modules are shared between courses, the static
     # prefix is going to have to be specific to the module, not the directory
@@ -198,31 +198,59 @@ def get_module(user, request, location, student_module_cache, position=None):
         if has_staff_access_to_course(user, module.location.course):
             module.get_html = add_histogram(module.get_html, module)
 
-    # If StudentModule for this instance wasn't already in the database,
-    # and this isn't a guest user, create it.
+    return module
+
+def get_instance_module(user, module, student_module_cache):
+    """
+    Returns instance_module is a StudentModule specific to this module for this student,
+        or None if this is an anonymous user
+    """
     if user.is_authenticated():
+        instance_module = student_module_cache.lookup(module.category,
+                                              module.location.url())
+        
         if not instance_module:
             instance_module = StudentModule(
                 student=user,
-                module_type=descriptor.category,
+                module_type=module.category,
                 module_state_key=module.id,
                 state=module.get_instance_state(),
                 max_grade=module.max_score())
             instance_module.save()
-            # Add to cache. The caller and the system context have references
-            # to it, so the change persists past the return
             student_module_cache.append(instance_module)
-        if not shared_module and shared_state_key is not None:
-            shared_module = StudentModule(
-                student=user,
-                module_type=descriptor.category,
-                module_state_key=shared_state_key,
-                state=module.get_shared_state())
-            shared_module.save()
-            student_module_cache.append(shared_module)
-
-    return (module, instance_module, shared_module, descriptor.category)
-
+            
+        return instance_module
+    else:
+        return None
+    
+def get_shared_instance_module(user, module, student_module_cache):
+    """
+    Return shared_module is a StudentModule specific to all modules with the same
+        'shared_state_key' attribute, or None if the module does not elect to
+        share state
+    """
+    if user.is_authenticated():
+        # To get the shared_state_key, we need to descriptor
+        descriptor = modulestore().get_item(module.location)
+        
+        shared_state_key = getattr(module, 'shared_state_key', None)
+        if shared_state_key is not None:
+            shared_module = student_module_cache.lookup(module.category,
+                                                        shared_state_key)
+            if not shared_module:
+                shared_module = StudentModule(
+                    student=user,
+                    module_type=descriptor.category,
+                    module_state_key=shared_state_key,
+                    state=module.get_shared_state())
+                shared_module.save()
+                student_module_cache.append(shared_module)
+        else:
+            shared_module = None
+        
+        return shared_module
+    else:
+        return None
 
 @csrf_exempt
 def xqueue_callback(request, userid, id, dispatch):
@@ -240,12 +268,13 @@ def xqueue_callback(request, userid, id, dispatch):
     # Retrieve target StudentModule
     user = User.objects.get(id=userid)
 
-    student_module_cache = StudentModuleCache(user, modulestore().get_item(id))
-    instance, instance_module, shared_module, module_type = get_module(request.user, request, id, student_module_cache)
+    student_module_cache = StudentModuleCache.cache_for_descriptor_descendents(user, modulestore().get_item(id))
+    instance = get_module(user, request, id, student_module_cache)
+    instance_module = get_instance_module(user, instance, student_module_cache)
 
     if instance_module is None:
         log.debug("Couldn't find module '%s' for user '%s'",
-                  id, request.user)
+                  id, user)
         raise Http404
 
     oldgrade = instance_module.grade
@@ -285,16 +314,18 @@ def modx_dispatch(request, dispatch=None, id=None):
       - id -- the module id. Used to look up the XModule instance
     '''
     # ''' (fix emacs broken parsing)
-
     # Check for submitted files
     p = request.POST.copy()
     if request.FILES:
         for inputfile_id in request.FILES.keys():
             p[inputfile_id] = request.FILES[inputfile_id]
 
-    student_module_cache = StudentModuleCache(request.user, modulestore().get_item(id))
-    instance, instance_module, shared_module, module_type = get_module(request.user, request, id, student_module_cache)
+    student_module_cache = StudentModuleCache.cache_for_descriptor_descendents(request.user, modulestore().get_item(id))
+    instance = get_module(request.user, request, id, student_module_cache)
 
+    instance_module = get_instance_module(request.user, instance, student_module_cache)
+    shared_module = get_shared_instance_module(request.user, instance, student_module_cache)
+    
     # Don't track state for anonymous users (who don't have student modules)
     if instance_module is not None:
         oldgrade = instance_module.grade
diff --git a/lms/djangoapps/courseware/tests/tests.py b/lms/djangoapps/courseware/tests/tests.py
index 0e2f7d7aa5..e0369baf7b 100644
--- a/lms/djangoapps/courseware/tests/tests.py
+++ b/lms/djangoapps/courseware/tests/tests.py
@@ -135,10 +135,25 @@ class ActivateLoginTestCase(TestCase):
 class PageLoader(ActivateLoginTestCase):
     ''' Base class that adds a function to load all pages in a modulestore '''
 
+
+    def enroll(self, course):
+        resp = self.client.post('/change_enrollment', {
+            'enrollment_action': 'enroll',
+            'course_id': course.id,
+            })
+        data = parse_json(resp)
+        self.assertTrue(data['success'])
+
     def check_pages_load(self, course_name, data_dir, modstore):
         print "Checking course {0} in {1}".format(course_name, data_dir)
         import_from_xml(modstore, data_dir, [course_name])
 
+        # enroll in the course before trying to access pages
+        courses = modstore.get_courses()
+        self.assertEqual(len(courses), 1)
+        course = courses[0]
+        self.enroll(course)
+
         n = 0
         num_bad = 0
         all_ok = True
diff --git a/lms/djangoapps/courseware/views.py b/lms/djangoapps/courseware/views.py
index 10522f183d..a7320d98b6 100644
--- a/lms/djangoapps/courseware/views.py
+++ b/lms/djangoapps/courseware/views.py
@@ -48,7 +48,6 @@ log = logging.getLogger("mitx.courseware")
 
 template_imports = {'urllib': urllib}
 
-
 def user_groups(user):
     if not user.is_authenticated():
         return []
@@ -59,6 +58,8 @@ def user_groups(user):
 
     # Kill caching on dev machines -- we switch groups a lot
     group_names = cache.get(key)
+    if settings.DEBUG:
+        group_names = None
 
     if group_names is None:
         group_names = [u.name for u in UserTestGroup.objects.filter(users=user)]
@@ -82,18 +83,17 @@ def gradebook(request, course_id):
     if 'course_admin' not in user_groups(request.user):
         raise Http404
     course = check_course(course_id)
-
+        
     student_objects = User.objects.all()[:100]
     student_info = []
-
-    for student in student_objects:
-        student_module_cache = StudentModuleCache(student, course)
-        course, _, _, _ = get_module(request.user, request, course.location, student_module_cache)
+    
+    #TODO: Only select students who are in the course
+    for student in student_objects:        
         student_info.append({
             'username': student.username,
             'id': student.id,
             'email': student.email,
-            'grade_info': grades.grade_sheet(student, course, student_module_cache),
+            'grade_summary': grades.grade(student, request, course),
             'realname': UserProfile.objects.get(user=student).name
         })
 
@@ -116,18 +116,23 @@ def profile(request, course_id, student_id=None):
 
     user_info = UserProfile.objects.get(user=student)
 
-    student_module_cache = StudentModuleCache(request.user, course)
-    course_module, _, _, _ = get_module(request.user, request, course.location, student_module_cache)
-
+    student_module_cache = StudentModuleCache.cache_for_descriptor_descendents(request.user, course)
+    course_module = get_module(request.user, request, course.location, student_module_cache)
+    
+    courseware_summary = grades.progress_summary(student, course_module, course.grader, student_module_cache)
+    grade_summary = grades.grade(request.user, request, course, student_module_cache)
+    
     context = {'name': user_info.name,
                'username': student.username,
                'location': user_info.location,
                'language': user_info.language,
                'email': student.email,
                'course': course,
-               'csrf': csrf(request)['csrf_token']
+               'csrf': csrf(request)['csrf_token'],
+               'courseware_summary' : courseware_summary,
+               'grade_summary' : grade_summary
                }
-    context.update(grades.grade_sheet(student, course_module, course.grader, student_module_cache))
+    context.update()
 
     return render_to_response('profile.html', context)
 
@@ -198,11 +203,12 @@ def index(request, course_id, chapter=None, section=None,
         if look_for_module:
             section_descriptor = get_section(course, chapter, section)
             if section_descriptor is not None:
-                student_module_cache = StudentModuleCache(request.user,
+                student_module_cache = StudentModuleCache.cache_for_descriptor_descendents(
+                                                          request.user,
                                                           section_descriptor)
-                module, _, _, _ = get_module(request.user, request,
-                                             section_descriptor.location,
-                                             student_module_cache)
+                module = get_module(request.user, request,
+                                    section_descriptor.location,
+                                    student_module_cache)
                 context['content'] = module.get_html()
             else:
                 log.warning("Couldn't find a section descriptor for course_id '{0}',"
diff --git a/lms/envs/common.py b/lms/envs/common.py
index 21d7b6f5f3..254f0dc350 100644
--- a/lms/envs/common.py
+++ b/lms/envs/common.py
@@ -158,6 +158,9 @@ COURSE_SETTINGS =  {'6.002x_Fall_2012': {'number' : '6.002x',
                                           }
                     }
 
+# IP addresses that are allowed to reload the course, etc.
+# TODO (vshnayder): Will probably need to change as we get real access control in.
+LMS_MIGRATION_ALLOWED_IPS = []
 
 ############################### XModule Store ##################################
 MODULESTORE = {
diff --git a/lms/envs/dev_ike.py b/lms/envs/dev_ike.py
index 2256decb46..288a99bf3b 100644
--- a/lms/envs/dev_ike.py
+++ b/lms/envs/dev_ike.py
@@ -16,3 +16,8 @@ MITX_FEATURES['ENABLE_TEXTBOOK'] = False
 MITX_FEATURES['ENABLE_DISCUSSION'] = False
 MITX_FEATURES['ACCESS_REQUIRE_STAFF_FOR_COURSE'] = True	  # require that user be in the staff_* group to be able to enroll
 
+#-----------------------------------------------------------------------------
+# disable django debug toolbars
+
+INSTALLED_APPS = tuple([ app for app in INSTALLED_APPS if not app.startswith('debug_toolbar') ])
+MIDDLEWARE_CLASSES = tuple([ mcl for mcl in MIDDLEWARE_CLASSES if not mcl.startswith('debug_toolbar') ])
diff --git a/lms/static/images/textbook/textbook-left.png b/lms/static/images/textbook/textbook-left.png
new file mode 100644
index 0000000000..52cb58efe7
Binary files /dev/null and b/lms/static/images/textbook/textbook-left.png differ
diff --git a/lms/static/images/textbook/textbook-right.png b/lms/static/images/textbook/textbook-right.png
new file mode 100644
index 0000000000..8779df5df5
Binary files /dev/null and b/lms/static/images/textbook/textbook-right.png differ
diff --git a/lms/static/sass/course/_info.scss b/lms/static/sass/course/_info.scss
index d9af9c0f82..6b217f2285 100644
--- a/lms/static/sass/course/_info.scss
+++ b/lms/static/sass/course/_info.scss
@@ -20,7 +20,7 @@ div.info-wrapper {
 
       > li {
         @extend .clearfix;
-        border-bottom: 1px solid #e3e3e3;
+        border-bottom: 1px solid lighten($border-color, 10%);
         margin-bottom: lh();
         padding-bottom: lh(.5);
         list-style-type: disk;
@@ -76,42 +76,29 @@ div.info-wrapper {
     h1 {
       @extend .bottom-border;
       padding: lh(.5) lh(.5);
-    }
-
-    header {
-
-      // h1 {
-      //   font-weight: 100;
-      //   font-style: italic;
-      // }
-
-      p {
-         color: #666;
-         font-size: 12px;
-         margin-bottom: 0;
-         margin-top: 4px;
-      }
+      margin-bottom: 0;
     }
 
     ol {
       background: none;
       list-style: none;
       padding-left: 0;
+      margin: 0;
 
       li {
         @extend .clearfix;
         background: none;
-        border-bottom: 1px solid #d3d3d3;
-        @include box-shadow(0 1px 0 #eee);
+        border-bottom: 1px solid $border-color;
         @include box-sizing(border-box);
         padding: em(7) lh(.75);
         position: relative;
+        font-size: 1em;
 
         &.expandable,
         &.collapsable {
           h4 {
-            font-style: $body-font-size;
             font-weight: normal;
+            font-size: 1em;
             padding-left: 18px;
           }
         }
@@ -122,16 +109,12 @@ div.info-wrapper {
 
           li {
             border-bottom: 0;
-            border-top: 1px solid #d3d3d3;
+            border-top: 1px solid $border-color;
             @include box-shadow(inset 0 1px 0 #eee);
-            padding-left: lh(1.5);
+            font-size: 1em;
           }
         }
 
-        &:hover {
-          background-color: #e9e9e9;
-        }
-
         div.hitarea {
           background-image: url('../images/treeview-default.gif');
           display: block;
@@ -159,14 +142,12 @@ div.info-wrapper {
         h3 {
           border-bottom: 0;
           @include box-shadow(none);
-          color: #999;
-          font-size: $body-font-size;
-          font-weight: bold;
-          text-transform: uppercase;
+          color: #aaa;
+          font-size: 1em;
+          margin-bottom: em(6);
         }
 
         p {
-          font-size: $body-font-size;
           letter-spacing: 0;
           margin: 0;
           text-transform: none;
@@ -191,14 +172,8 @@ div.info-wrapper {
         }
 
         a {
-          color: lighten($text-color, 10%);
           @include inline-block();
-          text-decoration: none;
-          @include transition();
-
-          &:hover {
-            color: $mit-red;
-          }
+          line-height: lh();
         }
       }
     }
diff --git a/lms/static/sass/course/_profile.scss b/lms/static/sass/course/_profile.scss
index a772f1a293..006bd902e5 100644
--- a/lms/static/sass/course/_profile.scss
+++ b/lms/static/sass/course/_profile.scss
@@ -10,38 +10,26 @@ div.profile-wrapper {
 
     header {
       @extend .bottom-border;
-      margin: 0 ;
-      padding: lh(.5) lh();
+      margin: 0;
+      padding: lh(.5);
 
       h1 {
-        font-size: 18px;
         margin: 0;
         padding-right: 30px;
       }
-
-      a {
-        color: #999;
-        font-size: 12px;
-        position: absolute;
-        right: lh(.5);
-        text-transform: uppercase;
-        top: 13px;
-
-        &:hover {
-          color: #555;
-        }
-      }
     }
 
     ul {
       list-style: none;
+      padding: 0;
+      margin: 0;
 
       li {
         border-bottom: 1px solid #d3d3d3;
         @include box-shadow(0 1px 0 #eee);
         color: lighten($text-color, 10%);
         display: block;
-        padding: 7px lh();
+        padding: lh(.5) 0 lh(.5) lh(.5);
         position: relative;
         text-decoration: none;
         @include transition();
@@ -144,11 +132,14 @@ div.profile-wrapper {
     @extend .content;
 
     header {
-      @extend h1.top-header;
       @extend .clearfix;
+      @extend h1.top-header;
+      margin-bottom: lh();
 
       h1 {
         float: left;
+        font-size: 1em;
+        font-weight: 100;
         margin: 0;
       }
     }
@@ -162,6 +153,7 @@ div.profile-wrapper {
       border-top: 1px solid #e3e3e3;
       list-style: none;
       margin-top: lh();
+      padding-left: 0;
 
       > li {
         @extend .clearfix;
@@ -178,9 +170,11 @@ div.profile-wrapper {
           border-right: 1px dashed #ddd;
           @include box-sizing(border-box);
           display: table-cell;
+          letter-spacing: 0;
           margin: 0;
           padding: 0;
           padding-right: flex-gutter(9);
+          text-transform: none;
           width: flex-grid(2, 9);
         }
 
@@ -203,14 +197,39 @@ div.profile-wrapper {
 
             h3 {
               color: #666;
+
+              span {
+                color: #999;
+                font-size: em(14);
+                font-weight: 100;
+              }
             }
 
-            ol {
-              list-style: none;
+            p {
+              color: #999;
+              font-size: em(14);
+            }
 
-              li {
-                display: inline-block;
-                padding-right: 1em;
+            section.scores {
+              margin: lh(.5) 0;
+
+              h3 {
+                font-size: em(14);
+                @include inline-block;
+              }
+
+              ol {
+                list-style: none;
+                margin: 0;
+                padding: 0;
+                @include inline-block;
+
+                li {
+                  @include inline-block;
+                  font-size: em(14);
+                  font-weight: normal;
+                  padding-right: 1em;
+                }
               }
             }
           }
diff --git a/lms/static/sass/course/_textbook.scss b/lms/static/sass/course/_textbook.scss
index ed5e528809..249dadf29b 100644
--- a/lms/static/sass/course/_textbook.scss
+++ b/lms/static/sass/course/_textbook.scss
@@ -7,7 +7,7 @@ div.book-wrapper {
     @include box-sizing(border-box);
 
     ul#booknav {
-      font-size: 12px;
+      font-size: $body-font-size;
 
       a {
         color: #000;
@@ -39,8 +39,7 @@ div.book-wrapper {
       }
 
       > li {
-        border-bottom: 1px solid #d3d3d3;
-        @include box-shadow(0 1px 0 #eee);
+        border-bottom: 1px solid $border-color;
         padding: 7px 7px 7px 30px;
       }
     }
@@ -48,9 +47,11 @@ div.book-wrapper {
 
   section.book {
     @extend .content;
+    padding-right: 0;
+    padding-bottom: 0;
+    padding-top: 0;
 
     nav {
-      @extend .topbar;
       @extend .clearfix;
 
       a {
@@ -62,32 +63,57 @@ div.book-wrapper {
         @extend .clearfix;
 
         li {
+          position: absolute;
+          height: 100%;
+          width: flex-grid(2, 8);
+
+          a {
+            display: table;
+            @include box-sizing(border-box);
+            height: 100%;
+            width: 100%;
+            vertical-align: middle;
+            @include transition;
+            background-color: rgba(#000, .7);
+            background-repeat: no-repeat;
+            background-position: center;
+            opacity: 0;
+            filter: alpha(opacity=0);
+            text-indent: -9999px;
+
+            &:hover {
+              opacity: 1;
+              filter: alpha(opacity=100);
+
+              &.last {
+              }
+
+              &.next {
+              }
+            }
+          }
 
           &.last {
-            display: block;
-            float: left;
+            left: 0;
 
             a {
-              border-left: 0;
-              border-right: 1px solid darken(#f6efd4, 20%);
-              @include box-shadow(inset -1px 0 0 lighten(#f6efd4, 5%));
+              background-image: url('../images/textbook/textbook-left.png');
             }
           }
 
           &.next {
-            display: block;
-            float: right;
+            right: 0;
+
+            a {
+              background-image: url('../images/textbook/textbook-right.png');
+            }
           }
 
-          &:hover {
-            background: none;
-          }
         }
       }
 
       &.bottom-nav {
         border-bottom: 0;
-        border-top: 1px solid #EDDFAA;
         margin-bottom: -(lh());
         margin-top: lh();
       }
@@ -95,9 +121,10 @@ div.book-wrapper {
 
     section.page {
       text-align: center;
+      position: relative;
+      border: 1px solid $border-color;
 
       img {
-        border: 1px solid $border-color;
         max-width: 100%;
       }
     }
diff --git a/lms/static/sass/course/base/_base.scss b/lms/static/sass/course/base/_base.scss
index d04bcab103..d530eb74d4 100644
--- a/lms/static/sass/course/base/_base.scss
+++ b/lms/static/sass/course/base/_base.scss
@@ -1,8 +1,4 @@
-body {
-  font-family: $sans-serif;
-}
-
-h1, h2, h3, h4, h5, h6 {
+body, h1, h2, h3, h4, h5, h6, p, p a:link, p a:visited, a {
   font-family: $sans-serif;
 }
 
@@ -19,3 +15,9 @@ table {
     table-layout: fixed;
   }
 }
+
+form {
+  label {
+    display: block;
+  }
+}
diff --git a/lms/static/sass/course/base/_extends.scss b/lms/static/sass/course/base/_extends.scss
index 5927cb569e..a0d417f388 100644
--- a/lms/static/sass/course/base/_extends.scss
+++ b/lms/static/sass/course/base/_extends.scss
@@ -1,7 +1,7 @@
 h1.top-header {
   border-bottom: 1px solid #e3e3e3;
   text-align: left;
-  font-size: 24px;
+  font-size: em(24);
   font-weight: 100;
   padding-bottom: lh();
 }
@@ -51,7 +51,6 @@ h1.top-header {
 
 .sidebar {
   border-right: 1px solid #C8C8C8;
-  @include box-shadow(inset -1px 0 0 #e6e6e6);
   @include box-sizing(border-box);
   display: table-cell;
   font-family: $sans-serif;
@@ -75,7 +74,7 @@ h1.top-header {
   }
 
   .bottom-border {
-    border-bottom: 1px solid #d3d3d3;
+    border-bottom: 1px solid $border-color;
   }
 
   @media print {
diff --git a/lms/static/sass/course/wiki/_sidebar.scss b/lms/static/sass/course/wiki/_sidebar.scss
index 90bc654e08..ccaed19a17 100644
--- a/lms/static/sass/course/wiki/_sidebar.scss
+++ b/lms/static/sass/course/wiki/_sidebar.scss
@@ -4,78 +4,70 @@ div#wiki_panel {
 
   h2 {
     @extend .bottom-border;
-    font-size: 18px;
     margin: 0 ;
-    padding: lh(.5) lh();
-  }
-
-  input[type="button"] {
-    background: transparent;
-    border: none;
-    @include box-shadow(none);
-    color: #666;
-    font-size: 14px;
-    font-weight: bold;
-    margin: 0px;
-    padding: 7px lh();
-    text-align: left;
-    @include transition();
-    width: 100%;
+    padding: lh(.5) lh() lh(.5) 0;
+    color: #000;
   }
 
   ul {
+    padding-left: 0;
+    margin: 0;
+
     li {
-      @include box-shadow(inset 0 1px 0 0 #eee);
-      border-top: 1px solid #d3d3d3;
-
-      &:hover {
-        background: #efefef;
-        @include background-image(linear-gradient(-90deg, rgb(245,245,245), rgb(225,225,225)));
-      }
-
-      &:first-child {
-        border: none;
-      }
+      @extend .bottom-border;
 
       &.search {
-        padding: 10px lh();
+        padding: 10px lh() 10px 0;
 
         label {
           display: none;
         }
       }
 
-      &.create-article {
-        h3 {
-        }
-      }
-
       a {
         color: #666;
         font-size: 14px;
-        padding: 7px lh();
+        padding: 7px lh() 7px 0;
+
+        &:hover {
+          background: #efefef;
+        }
+
+      }
+    }
+
+    form {
+      input[type="submit"]{
+        @extend .light-button;
+        text-transform: none;
+        text-shadow: none;
       }
     }
   }
 
   div#wiki_create_form {
     @extend .clearfix;
-    background: #dadada;
-    border-bottom: 1px solid #d3d3d3;
-    padding: 15px;
+    padding: lh(.5) lh() lh(.5) 0;
+
+    label {
+      font-family: $sans-serif;
+      margin-bottom: lh(.5);
+    }
 
     input[type="text"] {
       @include box-sizing(border-box);
       display: block;
-      margin-bottom: 6px;
       width: 100%;
+      margin-bottom: lh(.5);
     }
 
     ul {
       list-style: none;
+      margin: 0;
 
       li {
         float: left;
+        border-bottom: 0;
 
         &#cancel {
           float: right;
diff --git a/lms/static/sass/marketing-ie.css b/lms/static/sass/marketing-ie.css
deleted file mode 100755
index 18d829fdeb..0000000000
--- a/lms/static/sass/marketing-ie.css
+++ /dev/null
@@ -1,10 +0,0 @@
-body {
-  margin: 0;
-  padding: 0; }
-
-.wrapper, .subpage, section.copyright, section.tos, section.privacy-policy, section.honor-code, header.announcement div, section.index-content, footer {
-  margin: 0;
-  overflow: hidden; }
-
-div#enroll form {
-  display: none; }
diff --git a/lms/static/sass/marketing.css b/lms/static/sass/marketing.css
deleted file mode 100755
index 5f34ec227e..0000000000
--- a/lms/static/sass/marketing.css
+++ /dev/null
@@ -1,1017 +0,0 @@
-/* 
-html5doctor.com Reset Stylesheet
-v1.6.1
-Last Updated: 2010-09-17
-Author: Richard Clark - http://richclarkdesign.com 
-Twitter: @rich_clark
-*/
-html, body, div, span, object, iframe,
-h1, h2, h3, h4, h5, h6, p, blockquote, pre,
-abbr, address, cite, code,
-del, dfn, em, img, ins, kbd, q, samp,
-small, strong, var,
-b, i,
-dl, dt, dd, ol, ul, li,
-fieldset, form, label, legend,
-table, caption, tbody, tfoot, thead, tr, th, td,
-article, aside, canvas, details, figcaption, figure,
-footer, header, hgroup, menu, nav, section, summary,
-time, mark, audio, video {
-  margin: 0;
-  padding: 0;
-  border: 0;
-  outline: 0;
-  font-size: 100%;
-  vertical-align: baseline;
-  background: transparent; }
-
-body {
-  line-height: 1; }
-
-article, aside, details, figcaption, figure,
-footer, header, hgroup, menu, nav, section {
-  display: block; }
-
-nav ul {
-  list-style: none; }
-
-blockquote, q {
-  quotes: none; }
-
-blockquote:before, blockquote:after,
-q:before, q:after {
-  content: '';
-  content: none; }
-
-a {
-  margin: 0;
-  padding: 0;
-  font-size: 100%;
-  vertical-align: baseline;
-  background: transparent; }
-
-/* change colours to suit your needs */
-ins {
-  background-color: #ff9;
-  color: #000;
-  text-decoration: none; }
-
-/* change colours to suit your needs */
-mark {
-  background-color: #ff9;
-  color: #000;
-  font-style: italic;
-  font-weight: bold; }
-
-del {
-  text-decoration: line-through; }
-
-abbr[title], dfn[title] {
-  border-bottom: 1px dotted;
-  cursor: help; }
-
-table {
-  border-collapse: collapse;
-  border-spacing: 0; }
-
-/* change border colour to suit your needs */
-hr {
-  display: block;
-  height: 1px;
-  border: 0;
-  border-top: 1px solid #cccccc;
-  margin: 1em 0;
-  padding: 0; }
-
-input, select {
-  vertical-align: middle; }
-
-/* Generated by Font Squirrel (http://www.fontsquirrel.com) on January 25, 2012 05:06:34 PM America/New_York */
-@font-face {
-  font-family: 'Open Sans';
-  src: url("../fonts/OpenSans-Regular-webfont.eot");
-  src: url("../fonts/OpenSans-Regular-webfont.eot?#iefix") format("embedded-opentype"), url("../fonts/OpenSans-Regular-webfont.woff") format("woff"), url("../fonts/OpenSans-Regular-webfont.ttf") format("truetype"), url("../fonts/OpenSans-Regular-webfont.svg#OpenSansRegular") format("svg");
-  font-weight: 600;
-  font-style: normal; }
-
-@font-face {
-  font-family: 'Open Sans';
-  src: url("../fonts/OpenSans-Italic-webfont.eot");
-  src: url("../fonts/OpenSans-Italic-webfont.eot?#iefix") format("embedded-opentype"), url("../fonts/OpenSans-Italic-webfont.woff") format("woff"), url("../fonts/OpenSans-Italic-webfont.ttf") format("truetype"), url("../fonts/OpenSans-Italic-webfont.svg#OpenSansItalic") format("svg");
-  font-weight: 400;
-  font-style: italic; }
-
-@font-face {
-  font-family: 'Open Sans';
-  src: url("../fonts/OpenSans-Bold-webfont.eot");
-  src: url("../fonts/OpenSans-Bold-webfont.eot?#iefix") format("embedded-opentype"), url("../fonts/OpenSans-Bold-webfont.woff") format("woff"), url("../fonts/OpenSans-Bold-webfont.ttf") format("truetype"), url("../fonts/OpenSans-Bold-webfont.svg#OpenSansBold") format("svg");
-  font-weight: 700;
-  font-style: normal; }
-
-@font-face {
-  font-family: 'Open Sans';
-  src: url("../fonts/OpenSans-BoldItalic-webfont.eot");
-  src: url("../fonts/OpenSans-BoldItalic-webfont.eot?#iefix") format("embedded-opentype"), url("../fonts/OpenSans-BoldItalic-webfont.woff") format("woff"), url("../fonts/OpenSans-BoldItalic-webfont.ttf") format("truetype"), url("../fonts/OpenSans-BoldItalic-webfont.svg#OpenSansBoldItalic") format("svg");
-  font-weight: 700;
-  font-style: italic; }
-
-@font-face {
-  font-family: 'Open Sans';
-  src: url("../fonts/OpenSans-ExtraBold-webfont.eot");
-  src: url("../fonts/OpenSans-ExtraBold-webfont.eot?#iefix") format("embedded-opentype"), url("../fonts/OpenSans-ExtraBold-webfont.woff") format("woff"), url("../fonts/OpenSans-ExtraBold-webfont.ttf") format("truetype"), url("../fonts/OpenSans-ExtraBold-webfont.svg#OpenSansExtrabold") format("svg");
-  font-weight: 800;
-  font-style: normal; }
-
-@font-face {
-  font-family: 'Open Sans';
-  src: url("../fonts/OpenSans-ExtraBoldItalic-webfont.eot");
-  src: url("../fonts/OpenSans-ExtraBoldItalic-webfont.eot?#iefix") format("embedded-opentype"), url("../fonts/OpenSans-ExtraBoldItalic-webfont.woff") format("woff"), url("../fonts/OpenSans-ExtraBoldItalic-webfont.ttf") format("truetype"), url("../fonts/OpenSans-ExtraBoldItalic-webfont.svg#OpenSansExtraboldItalic") format("svg");
-  font-weight: 800;
-  font-style: italic; }
-
-.wrapper, .subpage, section.copyright, section.tos, section.privacy-policy, section.honor-code, header.announcement div, footer, section.index-content {
-  -webkit-box-sizing: border-box;
-  -moz-box-sizing: border-box;
-  box-sizing: border-box;
-  margin: 0 auto;
-  max-width: 1400px;
-  padding: 25.888px;
-  width: 100%; }
-
-.subpage > div, section.copyright > div, section.tos > div, section.privacy-policy > div, section.honor-code > div {
-  padding-left: 34.171%; }
-  @media screen and (max-width: 940px) {
-    .subpage > div, section.copyright > div, section.tos > div, section.privacy-policy > div, section.honor-code > div {
-      padding-left: 0; } }
-  .subpage > div p, section.copyright > div p, section.tos > div p, section.privacy-policy > div p, section.honor-code > div p {
-    margin-bottom: 25.888px;
-    line-height: 25.888px; }
-  .subpage > div h1, section.copyright > div h1, section.tos > div h1, section.privacy-policy > div h1, section.honor-code > div h1 {
-    margin-bottom: 12.944px; }
-  .subpage > div h2, section.copyright > div h2, section.tos > div h2, section.privacy-policy > div h2, section.honor-code > div h2 {
-    font: 18px "Open Sans", Helvetica, Arial, sans-serif;
-    color: #000;
-    margin-bottom: 12.944px; }
-  .subpage > div ul, section.copyright > div ul, section.tos > div ul, section.privacy-policy > div ul, section.honor-code > div ul {
-    list-style: disc outside none; }
-    .subpage > div ul li, section.copyright > div ul li, section.tos > div ul li, section.privacy-policy > div ul li, section.honor-code > div ul li {
-      list-style: disc outside none;
-      line-height: 25.888px; }
-  .subpage > div dl, section.copyright > div dl, section.tos > div dl, section.privacy-policy > div dl, section.honor-code > div dl {
-    margin-bottom: 25.888px; }
-    .subpage > div dl dd, section.copyright > div dl dd, section.tos > div dl dd, section.privacy-policy > div dl dd, section.honor-code > div dl dd {
-      margin-bottom: 12.944px; }
-
-.clearfix:after, .subpage:after, section.copyright:after, section.tos:after, section.privacy-policy:after, section.honor-code:after, header.announcement div section:after, footer:after, section.index-content:after, section.index-content section:after, section.index-content section.about section:after, div.leanModal_box#enroll ol:after {
-  content: ".";
-  display: block;
-  height: 0;
-  clear: both;
-  visibility: hidden; }
-
-.button, header.announcement div section.course section a, section.index-content section.course a, section.index-content section.staff a, section.index-content section.about-course section.cta a.enroll {
-  -webkit-border-radius: 3px;
-  -moz-border-radius: 3px;
-  -ms-border-radius: 3px;
-  -o-border-radius: 3px;
-  border-radius: 3px;
-  display: -moz-inline-box;
-  -moz-box-orient: vertical;
-  display: inline-block;
-  vertical-align: baseline;
-  zoom: 1;
-  *display: inline;
-  *vertical-align: auto;
-  -webkit-transition-property: all;
-  -moz-transition-property: all;
-  -ms-transition-property: all;
-  -o-transition-property: all;
-  transition-property: all;
-  -webkit-transition-duration: 0.15s;
-  -moz-transition-duration: 0.15s;
-  -ms-transition-duration: 0.15s;
-  -o-transition-duration: 0.15s;
-  transition-duration: 0.15s;
-  -webkit-transition-timing-function: ease-out;
-  -moz-transition-timing-function: ease-out;
-  -ms-transition-timing-function: ease-out;
-  -o-transition-timing-function: ease-out;
-  transition-timing-function: ease-out;
-  -webkit-transition-delay: 0;
-  -moz-transition-delay: 0;
-  -ms-transition-delay: 0;
-  -o-transition-delay: 0;
-  transition-delay: 0;
-  background-color: #993333;
-  border: 1px solid #732626;
-  color: #fff;
-  margin: 25.888px 0 12.944px;
-  padding: 6.472px 12.944px;
-  text-decoration: none;
-  font-style: normal;
-  -webkit-box-shadow: inset 0 1px 0 #b83d3d;
-  -moz-box-shadow: inset 0 1px 0 #b83d3d;
-  box-shadow: inset 0 1px 0 #b83d3d;
-  -webkit-font-smoothing: antialiased; }
-  .button:hover, header.announcement div section.course section a:hover, section.index-content section.course a:hover, section.index-content section.staff a:hover, section.index-content section.about-course section.cta a.enroll:hover {
-    background-color: #732626;
-    border-color: #4d1919; }
-  .button span, header.announcement div section.course section a span, section.index-content section.course a span, section.index-content section.staff a span, section.index-content section.about-course section.cta a.enroll span {
-    font-family: Garamond, Baskerville, "Baskerville Old Face", "Hoefler Text", "Times New Roman", serif;
-    font-style: italic; }
-
-p.ie-warning {
-  display: block !important;
-  line-height: 1.3em;
-  background: yellow;
-  margin-bottom: 25.888px;
-  padding: 25.888px; }
-
-body {
-  background-color: #fff;
-  color: #444;
-  font: 16px Georgia, serif; }
-  body :focus {
-    outline-color: #ccc; }
-  body h1 {
-    font: 800 24px "Open Sans", Helvetica, Arial, sans-serif; }
-  body li {
-    margin-bottom: 25.888px; }
-  body em {
-    font-style: italic; }
-  body a {
-    color: #993333;
-    font-style: italic;
-    text-decoration: none; }
-    body a:hover, body a:focus {
-      color: #732626; }
-  body input[type="email"], body input[type="number"], body input[type="password"], body input[type="search"], body input[type="tel"], body input[type="text"], body input[type="url"], body input[type="color"], body input[type="date"], body input[type="datetime"], body input[type="datetime-local"], body input[type="month"], body input[type="time"], body input[type="week"], body textarea {
-    -webkit-box-shadow: 0 -1px 0 white;
-    -moz-box-shadow: 0 -1px 0 white;
-    box-shadow: 0 -1px 0 white;
-    background-color: #eeeeee;
-    background-image: -webkit-gradient(linear, left top, left bottom, color-stop(0%, #eeeeee), color-stop(100%, white));
-    background-image: -webkit-linear-gradient(top, #eeeeee, white);
-    background-image: -moz-linear-gradient(top, #eeeeee, white);
-    background-image: -ms-linear-gradient(top, #eeeeee, white);
-    background-image: -o-linear-gradient(top, #eeeeee, white);
-    background-image: linear-gradient(top, #eeeeee, white);
-    border: 1px solid #999;
-    font: 16px Georgia, serif;
-    padding: 4px;
-    width: 100%; }
-    body input[type="email"]:focus, body input[type="number"]:focus, body input[type="password"]:focus, body input[type="search"]:focus, body input[type="tel"]:focus, body input[type="text"]:focus, body input[type="url"]:focus, body input[type="color"]:focus, body input[type="date"]:focus, body input[type="datetime"]:focus, body input[type="datetime-local"]:focus, body input[type="month"]:focus, body input[type="time"]:focus, body input[type="week"]:focus, body textarea:focus {
-      border-color: #993333; }
-
-header.announcement {
-  -webkit-background-size: cover;
-  -moz-background-size: cover;
-  -ms-background-size: cover;
-  -o-background-size: cover;
-  background-size: cover;
-  background: #333;
-  border-bottom: 1px solid #000;
-  color: #fff;
-  -webkit-font-smoothing: antialiased; }
-  header.announcement.home {
-    background: #e3e3e3 url("../images/marketing/shot-5-medium.jpg"); }
-    @media screen and (min-width: 1200px) {
-      header.announcement.home {
-        background: #e3e3e3 url("../images/marketing/shot-5-large.jpg"); } }
-    header.announcement.home div {
-      padding: 258.88px 25.888px 77.664px; }
-      @media screen and (max-width:780px) {
-        header.announcement.home div {
-          padding: 64.72px 25.888px 51.776px; } }
-      header.announcement.home div nav h1 {
-        margin-right: 0; }
-      header.announcement.home div nav a.login {
-        display: none; }
-  header.announcement.course {
-    background: #e3e3e3 url("../images/marketing/course-bg-small.jpg"); }
-    @media screen and (min-width: 1200px) {
-      header.announcement.course {
-        background: #e3e3e3 url("../images/marketing/course-bg-large.jpg"); } }
-    @media screen and (max-width: 1199px) and (min-width: 700px) {
-      header.announcement.course {
-        background: #e3e3e3 url("../images/marketing/course-bg-medium.jpg"); } }
-    header.announcement.course div {
-      padding: 103.552px 25.888px 51.776px; }
-      @media screen and (max-width:780px) {
-        header.announcement.course div {
-          padding: 64.72px 25.888px 51.776px; } }
-  header.announcement div {
-    position: relative; }
-    header.announcement div nav {
-      position: absolute;
-      top: 0;
-      right: 25.888px;
-      -webkit-border-radius: 0 0 3px 3px;
-      -moz-border-radius: 0 0 3px 3px;
-      -ms-border-radius: 0 0 3px 3px;
-      -o-border-radius: 0 0 3px 3px;
-      border-radius: 0 0 3px 3px;
-      background: #333;
-      background: rgba(0, 0, 0, 0.7);
-      padding: 12.944px 25.888px; }
-      header.announcement div nav h1 {
-        display: -moz-inline-box;
-        -moz-box-orient: vertical;
-        display: inline-block;
-        vertical-align: baseline;
-        zoom: 1;
-        *display: inline;
-        *vertical-align: auto;
-        margin-right: 12.944px; }
-        header.announcement div nav h1 a {
-          font: italic 800 18px "Open Sans", Helvetica, Arial, sans-serif;
-          color: #fff;
-          text-decoration: none; }
-          header.announcement div nav h1 a:hover, header.announcement div nav h1 a:focus {
-            color: #999; }
-      header.announcement div nav a.login {
-        text-decoration: none;
-        color: #fff;
-        font-size: 12px;
-        font-style: normal;
-        font-family: "Open Sans", Helvetica, Arial, sans-serif; }
-        header.announcement div nav a.login:hover, header.announcement div nav a.login:focus {
-          color: #999; }
-    header.announcement div section {
-      background: #993333;
-      display: -moz-inline-box;
-      -moz-box-orient: vertical;
-      display: inline-block;
-      vertical-align: baseline;
-      zoom: 1;
-      *display: inline;
-      *vertical-align: auto;
-      margin-left: 34.171%;
-      padding: 25.888px 38.832px; }
-      @media screen and (max-width: 780px) {
-        header.announcement div section {
-          margin-left: 0; } }
-      header.announcement div section h1 {
-        font-family: "Open Sans";
-        font-size: 30px;
-        font-weight: 800;
-        display: -moz-inline-box;
-        -moz-box-orient: vertical;
-        display: inline-block;
-        vertical-align: baseline;
-        zoom: 1;
-        *display: inline;
-        *vertical-align: auto;
-        line-height: 1.2em;
-        margin: 0 25.888px 0 0; }
-      header.announcement div section h2 {
-        font-family: "Open Sans";
-        font-size: 24px;
-        font-weight: 400;
-        display: -moz-inline-box;
-        -moz-box-orient: vertical;
-        display: inline-block;
-        vertical-align: baseline;
-        zoom: 1;
-        *display: inline;
-        *vertical-align: auto;
-        line-height: 1.2em; }
-      header.announcement div section.course section {
-        float: left;
-        margin-left: 0;
-        margin-right: 3.817%;
-        padding: 0;
-        width: 48.092%; }
-        @media screen and (max-width: 780px) {
-          header.announcement div section.course section {
-            float: none;
-            width: 100%;
-            margin-right: 0; } }
-        header.announcement div section.course section a {
-          background-color: #4d1919;
-          border-color: #260d0d;
-          -webkit-box-shadow: inset 0 1px 0 #732626, 0 1px 0 #ac3939;
-          -moz-box-shadow: inset 0 1px 0 #732626, 0 1px 0 #ac3939;
-          box-shadow: inset 0 1px 0 #732626, 0 1px 0 #ac3939;
-          display: block;
-          padding: 12.944px 25.888px;
-          text-align: center; }
-          header.announcement div section.course section a:hover {
-            background-color: #732626;
-            border-color: #4d1919; }
-      header.announcement div section.course p {
-        width: 48.092%;
-        line-height: 25.888px;
-        float: left; }
-        @media screen and (max-width: 780px) {
-          header.announcement div section.course p {
-            float: none;
-            width: 100%; } }
-
-footer {
-  padding-top: 0; }
-  footer div.footer-wrapper {
-    border-top: 1px solid #e5e5e5;
-    padding: 25.888px 0;
-    background: url("../images/marketing/mit-logo.png") right center no-repeat; }
-    @media screen and (max-width: 780px) {
-      footer div.footer-wrapper {
-        background-position: left bottom;
-        padding-bottom: 77.664px; } }
-    footer div.footer-wrapper a {
-      color: #888;
-      text-decoration: none;
-      -webkit-transition-property: all;
-      -moz-transition-property: all;
-      -ms-transition-property: all;
-      -o-transition-property: all;
-      transition-property: all;
-      -webkit-transition-duration: 0.15s;
-      -moz-transition-duration: 0.15s;
-      -ms-transition-duration: 0.15s;
-      -o-transition-duration: 0.15s;
-      transition-duration: 0.15s;
-      -webkit-transition-timing-function: ease-out;
-      -moz-transition-timing-function: ease-out;
-      -ms-transition-timing-function: ease-out;
-      -o-transition-timing-function: ease-out;
-      transition-timing-function: ease-out;
-      -webkit-transition-delay: 0;
-      -moz-transition-delay: 0;
-      -ms-transition-delay: 0;
-      -o-transition-delay: 0;
-      transition-delay: 0; }
-      footer div.footer-wrapper a:hover, footer div.footer-wrapper a:focus {
-        color: #666; }
-    footer div.footer-wrapper p {
-      display: -moz-inline-box;
-      -moz-box-orient: vertical;
-      display: inline-block;
-      vertical-align: baseline;
-      zoom: 1;
-      *display: inline;
-      *vertical-align: auto;
-      margin-right: 25.888px; }
-    footer div.footer-wrapper ul {
-      display: -moz-inline-box;
-      -moz-box-orient: vertical;
-      display: inline-block;
-      vertical-align: baseline;
-      zoom: 1;
-      *display: inline;
-      *vertical-align: auto; }
-      @media screen and (max-width: 780px) {
-        footer div.footer-wrapper ul {
-          margin-top: 25.888px; } }
-      footer div.footer-wrapper ul li {
-        display: -moz-inline-box;
-        -moz-box-orient: vertical;
-        display: inline-block;
-        vertical-align: baseline;
-        zoom: 1;
-        *display: inline;
-        *vertical-align: auto;
-        margin-bottom: 0; }
-        footer div.footer-wrapper ul li:after {
-          content: ' |';
-          display: inline;
-          color: #ccc; }
-        footer div.footer-wrapper ul li:last-child:after {
-          content: none; }
-      footer div.footer-wrapper ul.social {
-        float: right;
-        margin-right: 60px;
-        position: relative;
-        top: -5px; }
-        @media screen and (max-width: 780px) {
-          footer div.footer-wrapper ul.social {
-            float: none; } }
-        footer div.footer-wrapper ul.social li {
-          float: left;
-          margin-right: 12.944px; }
-          footer div.footer-wrapper ul.social li:after {
-            content: none;
-            display: none; }
-          footer div.footer-wrapper ul.social li a {
-            display: block;
-            height: 29px;
-            width: 28px;
-            text-indent: -9999px; }
-            footer div.footer-wrapper ul.social li a:hover {
-              opacity: .8; }
-          footer div.footer-wrapper ul.social li.twitter a {
-            background: url("../images/marketing/twitter.png") 0 0 no-repeat; }
-          footer div.footer-wrapper ul.social li.facebook a {
-            background: url("../images/marketing/facebook.png") 0 0 no-repeat; }
-          footer div.footer-wrapper ul.social li.linkedin a {
-            background: url("../images/marketing/linkedin.png") 0 0 no-repeat; }
-
-section.index-content section {
-  float: left; }
-  @media screen and (max-width: 780px) {
-    section.index-content section {
-      float: none;
-      width: auto;
-      margin-right: 0; } }
-  section.index-content section h1 {
-    font-size: 800 24px "Open Sans";
-    margin-bottom: 25.888px; }
-  section.index-content section p {
-    line-height: 25.888px;
-    margin-bottom: 25.888px; }
-  section.index-content section ul {
-    margin: 0; }
-  section.index-content section.about {
-    -webkit-box-sizing: border-box;
-    -moz-box-sizing: border-box;
-    box-sizing: border-box;
-    border-right: 1px solid #e5e5e5;
-    margin-right: 2.513%;
-    padding-right: 1.256%;
-    width: 65.829%; }
-    @media screen and (max-width: 780px) {
-      section.index-content section.about {
-        width: 100%;
-        border-right: 0;
-        margin-right: 0;
-        padding-right: 0; } }
-    section.index-content section.about section {
-      margin-bottom: 25.888px; }
-      section.index-content section.about section p {
-        width: 48.092%;
-        float: left; }
-        @media screen and (max-width: 780px) {
-          section.index-content section.about section p {
-            float: none;
-            width: auto; } }
-        section.index-content section.about section p:nth-child(odd) {
-          margin-right: 3.817%; }
-          @media screen and (max-width: 780px) {
-            section.index-content section.about section p:nth-child(odd) {
-              margin-right: 0; } }
-      section.index-content section.about section.intro section {
-        margin-bottom: 0; }
-        section.index-content section.about section.intro section.intro-text {
-          margin-right: 3.817%;
-          width: 48.092%; }
-          @media screen and (max-width: 780px) {
-            section.index-content section.about section.intro section.intro-text {
-              margin-right: 0;
-              width: auto; } }
-          section.index-content section.about section.intro section.intro-text p {
-            margin-right: 0;
-            width: auto;
-            float: none; }
-        section.index-content section.about section.intro section.intro-video {
-          width: 48.092%; }
-          @media screen and (max-width: 780px) {
-            section.index-content section.about section.intro section.intro-video {
-              width: auto; } }
-          section.index-content section.about section.intro section.intro-video a {
-            display: block;
-            width: 100%; }
-            section.index-content section.about section.intro section.intro-video a img {
-              width: 100%; }
-            section.index-content section.about section.intro section.intro-video a span {
-              display: none; }
-      section.index-content section.about section.features {
-        border-top: 1px solid #E5E5E5;
-        padding-top: 25.888px;
-        margin-bottom: 0; }
-        section.index-content section.about section.features h2 {
-          text-transform: uppercase;
-          letter-spacing: 1px;
-          color: #888;
-          margin-bottom: 25.888px;
-          font-weight: normal;
-          font-size: 14px; }
-          section.index-content section.about section.features h2 span {
-            text-transform: none; }
-        section.index-content section.about section.features p {
-          width: auto;
-          clear: both; }
-          section.index-content section.about section.features p strong {
-            font-family: "Open sans";
-            font-weight: 800; }
-          section.index-content section.about section.features p a {
-            color: #993333;
-            text-decoration: none;
-            -webkit-transition-property: all;
-            -moz-transition-property: all;
-            -ms-transition-property: all;
-            -o-transition-property: all;
-            transition-property: all;
-            -webkit-transition-duration: 0.15s;
-            -moz-transition-duration: 0.15s;
-            -ms-transition-duration: 0.15s;
-            -o-transition-duration: 0.15s;
-            transition-duration: 0.15s;
-            -webkit-transition-timing-function: ease-out;
-            -moz-transition-timing-function: ease-out;
-            -ms-transition-timing-function: ease-out;
-            -o-transition-timing-function: ease-out;
-            transition-timing-function: ease-out;
-            -webkit-transition-delay: 0;
-            -moz-transition-delay: 0;
-            -ms-transition-delay: 0;
-            -o-transition-delay: 0;
-            transition-delay: 0; }
-            section.index-content section.about section.features p a:hover, section.index-content section.about section.features p a:focus {
-              color: #602020; }
-        section.index-content section.about section.features ul {
-          margin-bottom: 0; }
-          section.index-content section.about section.features ul li {
-            line-height: 25.888px;
-            width: 48.092%;
-            float: left;
-            margin-bottom: 12.944px; }
-            @media screen and (max-width: 780px) {
-              section.index-content section.about section.features ul li {
-                width: auto;
-                float: none; } }
-            section.index-content section.about section.features ul li:nth-child(odd) {
-              margin-right: 3.817%; }
-              @media screen and (max-width: 780px) {
-                section.index-content section.about section.features ul li:nth-child(odd) {
-                  margin-right: 0; } }
-  section.index-content section.course, section.index-content section.staff {
-    width: 31.658%; }
-    @media screen and (max-width: 780px) {
-      section.index-content section.course, section.index-content section.staff {
-        width: auto; } }
-    section.index-content section.course h1, section.index-content section.staff h1 {
-      color: #888;
-      font: normal 16px Georgia, serif;
-      font-size: 14px;
-      letter-spacing: 1px;
-      margin-bottom: 25.888px;
-      text-transform: uppercase; }
-    section.index-content section.course h2, section.index-content section.staff h2 {
-      font: 800 24px "Open Sans", Helvetica, Arial, sans-serif; }
-    section.index-content section.course h3, section.index-content section.staff h3 {
-      font: 400 18px "Open Sans", Helvetica, Arial, sans-serif; }
-    section.index-content section.course a span.arrow, section.index-content section.staff a span.arrow {
-      color: rgba(255, 255, 255, 0.6);
-      font-style: normal;
-      display: -moz-inline-box;
-      -moz-box-orient: vertical;
-      display: inline-block;
-      vertical-align: baseline;
-      zoom: 1;
-      *display: inline;
-      *vertical-align: auto;
-      padding-left: 10px; }
-    section.index-content section.course ul, section.index-content section.staff ul {
-      list-style: none; }
-      section.index-content section.course ul li img, section.index-content section.staff ul li img {
-        float: left;
-        margin-right: 12.944px; }
-  section.index-content section.course h2 {
-    padding-top: 129.44px;
-    background: url("../images/marketing/circuits-bg.jpg") 0 0 no-repeat;
-    -webkit-background-size: contain;
-    -moz-background-size: contain;
-    -ms-background-size: contain;
-    -o-background-size: contain;
-    background-size: contain; }
-    @media screen and (max-width: 998px) and (min-width: 781px) {
-      section.index-content section.course h2 {
-        background: url("../images/marketing/circuits-medium-bg.jpg") 0 0 no-repeat; } }
-    @media screen and (max-width: 780px) {
-      section.index-content section.course h2 {
-        padding-top: 129.44px;
-        background: url("../images/marketing/circuits-bg.jpg") 0 0 no-repeat; } }
-    @media screen and (min-width: 500px) and (max-width: 781px) {
-      section.index-content section.course h2 {
-        padding-top: 207.104px; } }
-  section.index-content section.course div.announcement p.announcement-button a {
-    margin-top: 0; }
-  section.index-content section.course div.announcement img {
-    max-width: 100%;
-    margin-bottom: 25.888px; }
-  section.index-content section.about-course {
-    -webkit-box-sizing: border-box;
-    -moz-box-sizing: border-box;
-    box-sizing: border-box;
-    border-right: 1px solid #e5e5e5;
-    margin-right: 2.513%;
-    padding-right: 1.256%;
-    width: 65.829%; }
-    @media screen and (max-width: 780px) {
-      section.index-content section.about-course {
-        width: auto;
-        border-right: 0;
-        margin-right: 0;
-        padding-right: 0; } }
-    section.index-content section.about-course section {
-      width: 48.092%; }
-      @media screen and (max-width: 780px) {
-        section.index-content section.about-course section {
-          width: auto; } }
-      section.index-content section.about-course section.about-info {
-        margin-right: 3.817%; }
-        @media screen and (max-width: 780px) {
-          section.index-content section.about-course section.about-info {
-            margin-right: 0; } }
-      section.index-content section.about-course section.requirements {
-        clear: both;
-        width: 100%;
-        border-top: 1px solid #E5E5E5;
-        padding-top: 25.888px;
-        margin-bottom: 0; }
-        section.index-content section.about-course section.requirements p {
-          float: left;
-          width: 48.092%;
-          margin-right: 3.817%; }
-          @media screen and (max-width: 780px) {
-            section.index-content section.about-course section.requirements p {
-              margin-right: 0;
-              float: none;
-              width: auto; } }
-          section.index-content section.about-course section.requirements p:nth-child(odd) {
-            margin-right: 0; }
-      section.index-content section.about-course section.cta {
-        width: 100%;
-        text-align: center; }
-        section.index-content section.about-course section.cta a.enroll {
-          padding: 12.944px 51.776px;
-          display: -moz-inline-box;
-          -moz-box-orient: vertical;
-          display: inline-block;
-          vertical-align: baseline;
-          zoom: 1;
-          *display: inline;
-          *vertical-align: auto;
-          text-align: center;
-          font: 800 18px "Open Sans", Helvetica, Arial, sans-serif; }
-  section.index-content section.staff h1 {
-    margin-top: 25.888px; }
-
-#lean_overlay {
-  background: #000;
-  display: none;
-  height: 100%;
-  left: 0px;
-  position: fixed;
-  top: 0px;
-  width: 100%;
-  z-index: 100; }
-
-div.leanModal_box {
-  background: #fff;
-  border: none;
-  -webkit-border-radius: 3px;
-  -moz-border-radius: 3px;
-  -ms-border-radius: 3px;
-  -o-border-radius: 3px;
-  border-radius: 3px;
-  -webkit-box-shadow: 0 0 6px black;
-  -moz-box-shadow: 0 0 6px black;
-  box-shadow: 0 0 6px black;
-  -webkit-box-sizing: border-box;
-  -moz-box-sizing: border-box;
-  box-sizing: border-box;
-  display: none;
-  padding: 51.776px;
-  text-align: left; }
-  div.leanModal_box a.modal_close {
-    color: #aaa;
-    display: block;
-    font-style: normal;
-    height: 14px;
-    position: absolute;
-    right: 12px;
-    top: 12px;
-    width: 14px;
-    z-index: 2; }
-    div.leanModal_box a.modal_close:hover {
-      color: #993333;
-      text-decoration: none; }
-  div.leanModal_box h1 {
-    border-bottom: 1px solid #eee;
-    font-size: 24px;
-    margin-bottom: 25.888px;
-    margin-top: 0;
-    padding-bottom: 25.888px;
-    text-align: left; }
-  div.leanModal_box#enroll {
-    max-width: 600px; }
-    div.leanModal_box#enroll ol {
-      padding-top: 25.888px; }
-      div.leanModal_box#enroll ol li.terms, div.leanModal_box#enroll ol li.honor-code {
-        float: none;
-        width: auto; }
-      div.leanModal_box#enroll ol li div.tip {
-        display: none; }
-      div.leanModal_box#enroll ol li:hover div.tip {
-        background: #333;
-        color: #fff;
-        display: block;
-        font-size: 16px;
-        line-height: 25.888px;
-        margin: 0 0 0 -10px;
-        padding: 10px;
-        position: absolute;
-        -webkit-font-smoothing: antialiased;
-        width: 500px; }
-  div.leanModal_box form {
-    text-align: left; }
-    div.leanModal_box form div#enroll_error, div.leanModal_box form div#login_error, div.leanModal_box form div#pwd_error {
-      background-color: #333333;
-      border: black;
-      color: #fff;
-      font-family: "Open sans";
-      font-weight: bold;
-      letter-spacing: 1px;
-      margin: -25.888px -25.888px 25.888px;
-      padding: 12.944px;
-      text-shadow: 0 1px 0 #1a1a1a;
-      -webkit-font-smoothing: antialiased; }
-      div.leanModal_box form div#enroll_error:empty, div.leanModal_box form div#login_error:empty, div.leanModal_box form div#pwd_error:empty {
-        padding: 0; }
-    div.leanModal_box form ol {
-      list-style: none;
-      margin-bottom: 25.888px; }
-      div.leanModal_box form ol li {
-        margin-bottom: 12.944px; }
-        div.leanModal_box form ol li.terms, div.leanModal_box form ol li.remember {
-          border-top: 1px solid #eee;
-          clear: both;
-          float: none;
-          padding-top: 25.888px;
-          width: auto; }
-        div.leanModal_box form ol li.honor-code {
-          float: none;
-          width: auto; }
-        div.leanModal_box form ol li label {
-          display: block;
-          font-weight: bold; }
-        div.leanModal_box form ol li input[type="email"], div.leanModal_box form ol li input[type="number"], div.leanModal_box form ol li input[type="password"], div.leanModal_box form ol li input[type="search"], div.leanModal_box form ol li input[type="tel"], div.leanModal_box form ol li input[type="text"], div.leanModal_box form ol li input[type="url"], div.leanModal_box form ol li input[type="color"], div.leanModal_box form ol li input[type="date"], div.leanModal_box form ol li input[type="datetime"], div.leanModal_box form ol li input[type="datetime-local"], div.leanModal_box form ol li input[type="month"], div.leanModal_box form ol li input[type="time"], div.leanModal_box form ol li input[type="week"], div.leanModal_box form ol li textarea {
-          -webkit-box-sizing: border-box;
-          -moz-box-sizing: border-box;
-          box-sizing: border-box;
-          width: 100%; }
-        div.leanModal_box form ol li input[type="checkbox"] {
-          margin-right: 10px; }
-        div.leanModal_box form ol li ul {
-          list-style: disc outside none;
-          margin: 12.944px 0 25.888px 25.888px; }
-          div.leanModal_box form ol li ul li {
-            color: #666;
-            float: none;
-            font-size: 14px;
-            list-style: disc outside none;
-            margin-bottom: 12.944px; }
-    div.leanModal_box form input[type="button"], div.leanModal_box form input[type="submit"] {
-      border: 1px solid #691b1b;
-      -webkit-border-radius: 3px;
-      -moz-border-radius: 3px;
-      -ms-border-radius: 3px;
-      -o-border-radius: 3px;
-      border-radius: 3px;
-      -webkit-box-shadow: inset 0 1px 0 0 #bc5c5c;
-      -moz-box-shadow: inset 0 1px 0 0 #bc5c5c;
-      box-shadow: inset 0 1px 0 0 #bc5c5c;
-      color: white;
-      display: inline;
-      font-size: 11px;
-      font-weight: bold;
-      background-color: #993333;
-      background-image: -webkit-gradient(linear, left top, left bottom, color-stop(0%, #993333), color-stop(100%, #761e1e));
-      background-image: -webkit-linear-gradient(top, #993333, #761e1e);
-      background-image: -moz-linear-gradient(top, #993333, #761e1e);
-      background-image: -ms-linear-gradient(top, #993333, #761e1e);
-      background-image: -o-linear-gradient(top, #993333, #761e1e);
-      background-image: linear-gradient(top, #993333, #761e1e);
-      padding: 6px 18px 7px;
-      text-shadow: 0 1px 0 #5d1414;
-      -webkit-background-clip: padding-box;
-      font-size: 18px;
-      padding: 12.944px; }
-      div.leanModal_box form input[type="button"]:hover, div.leanModal_box form input[type="submit"]:hover {
-        -webkit-box-shadow: inset 0 1px 0 0 #a44141;
-        -moz-box-shadow: inset 0 1px 0 0 #a44141;
-        box-shadow: inset 0 1px 0 0 #a44141;
-        cursor: pointer;
-        background-color: #823030;
-        background-image: -webkit-gradient(linear, left top, left bottom, color-stop(0%, #823030), color-stop(100%, #691c1c));
-        background-image: -webkit-linear-gradient(top, #823030, #691c1c);
-        background-image: -moz-linear-gradient(top, #823030, #691c1c);
-        background-image: -ms-linear-gradient(top, #823030, #691c1c);
-        background-image: -o-linear-gradient(top, #823030, #691c1c);
-        background-image: linear-gradient(top, #823030, #691c1c); }
-      div.leanModal_box form input[type="button"]:active, div.leanModal_box form input[type="submit"]:active {
-        border: 1px solid #691b1b;
-        -webkit-box-shadow: inset 0 0 8px 4px #5c1919, inset 0 0 8px 4px #5c1919, 0 1px 1px 0 #eeeeee;
-        -moz-box-shadow: inset 0 0 8px 4px #5c1919, inset 0 0 8px 4px #5c1919, 0 1px 1px 0 #eeeeee;
-        box-shadow: inset 0 0 8px 4px #5c1919, inset 0 0 8px 4px #5c1919, 0 1px 1px 0 #eeeeee; }
-
-div#login {
-  min-width: 400px; }
-  div#login header {
-    border-bottom: 1px solid #ddd;
-    margin-bottom: 25.888px;
-    padding-bottom: 25.888px; }
-    div#login header h1 {
-      border-bottom: 0;
-      padding-bottom: 0;
-      margin-bottom: 6.472px; }
-  div#login ol li {
-    float: none;
-    width: auto; }
-
-div.lost-password {
-  margin-top: 25.888px;
-  text-align: left; }
-  div.lost-password a {
-    color: #999; }
-    div.lost-password a:hover {
-      color: #444; }
-
-div#pwd_reset p {
-  margin-bottom: 25.888px; }
-div#pwd_reset input[type="email"] {
-  margin-bottom: 25.888px; }
-
-div#apply_name_change,
-div#change_email,
-div#unenroll,
-div#deactivate-account {
-  max-width: 700px; }
-  div#apply_name_change ul,
-  div#change_email ul,
-  div#unenroll ul,
-  div#deactivate-account ul {
-    list-style: none; }
-    div#apply_name_change ul li,
-    div#change_email ul li,
-    div#unenroll ul li,
-    div#deactivate-account ul li {
-      margin-bottom: 12.944px; }
-      div#apply_name_change ul li textarea, div#apply_name_change ul li input[type="email"], div#apply_name_change ul li input[type="number"], div#apply_name_change ul li input[type="password"], div#apply_name_change ul li input[type="search"], div#apply_name_change ul li input[type="tel"], div#apply_name_change ul li input[type="text"], div#apply_name_change ul li input[type="url"], div#apply_name_change ul li input[type="color"], div#apply_name_change ul li input[type="date"], div#apply_name_change ul li input[type="datetime"], div#apply_name_change ul li input[type="datetime-local"], div#apply_name_change ul li input[type="month"], div#apply_name_change ul li input[type="time"], div#apply_name_change ul li input[type="week"],
-      div#change_email ul li textarea,
-      div#change_email ul li input[type="email"],
-      div#change_email ul li input[type="number"],
-      div#change_email ul li input[type="password"],
-      div#change_email ul li input[type="search"],
-      div#change_email ul li input[type="tel"],
-      div#change_email ul li input[type="text"],
-      div#change_email ul li input[type="url"],
-      div#change_email ul li input[type="color"],
-      div#change_email ul li input[type="date"],
-      div#change_email ul li input[type="datetime"],
-      div#change_email ul li input[type="datetime-local"],
-      div#change_email ul li input[type="month"],
-      div#change_email ul li input[type="time"],
-      div#change_email ul li input[type="week"],
-      div#unenroll ul li textarea,
-      div#unenroll ul li input[type="email"],
-      div#unenroll ul li input[type="number"],
-      div#unenroll ul li input[type="password"],
-      div#unenroll ul li input[type="search"],
-      div#unenroll ul li input[type="tel"],
-      div#unenroll ul li input[type="text"],
-      div#unenroll ul li input[type="url"],
-      div#unenroll ul li input[type="color"],
-      div#unenroll ul li input[type="date"],
-      div#unenroll ul li input[type="datetime"],
-      div#unenroll ul li input[type="datetime-local"],
-      div#unenroll ul li input[type="month"],
-      div#unenroll ul li input[type="time"],
-      div#unenroll ul li input[type="week"],
-      div#deactivate-account ul li textarea,
-      div#deactivate-account ul li input[type="email"],
-      div#deactivate-account ul li input[type="number"],
-      div#deactivate-account ul li input[type="password"],
-      div#deactivate-account ul li input[type="search"],
-      div#deactivate-account ul li input[type="tel"],
-      div#deactivate-account ul li input[type="text"],
-      div#deactivate-account ul li input[type="url"],
-      div#deactivate-account ul li input[type="color"],
-      div#deactivate-account ul li input[type="date"],
-      div#deactivate-account ul li input[type="datetime"],
-      div#deactivate-account ul li input[type="datetime-local"],
-      div#deactivate-account ul li input[type="month"],
-      div#deactivate-account ul li input[type="time"],
-      div#deactivate-account ul li input[type="week"] {
-        -webkit-box-sizing: border-box;
-        -moz-box-sizing: border-box;
-        box-sizing: border-box;
-        display: block;
-        width: 100%; }
-      div#apply_name_change ul li textarea,
-      div#change_email ul li textarea,
-      div#unenroll ul li textarea,
-      div#deactivate-account ul li textarea {
-        height: 60px; }
-      div#apply_name_change ul li input[type="submit"],
-      div#change_email ul li input[type="submit"],
-      div#unenroll ul li input[type="submit"],
-      div#deactivate-account ul li input[type="submit"] {
-        white-space: normal; }
-
-div#feedback_div form ol li {
-  float: none;
-  width: 100%; }
-  div#feedback_div form ol li textarea#feedback_message {
-    height: 100px; }
diff --git a/lms/static/sass/shared/_modal.scss b/lms/static/sass/shared/_modal.scss
index f580b034cb..409c6088ec 100644
--- a/lms/static/sass/shared/_modal.scss
+++ b/lms/static/sass/shared/_modal.scss
@@ -299,3 +299,7 @@
     }
   }
 }
+
+.leanModal_box {
+  @extend .modal;
+}
diff --git a/lms/templates/gradebook.html b/lms/templates/gradebook.html
index bcc0456711..e5721969e9 100644
--- a/lms/templates/gradebook.html
+++ b/lms/templates/gradebook.html
@@ -8,6 +8,7 @@
 </%block>
 
 <%block name="headextra">
+  <%static:css group='course'/>
   
   <style type="text/css">
   .grade_a {color:green;}
@@ -19,7 +20,8 @@
   
 </%block>
 
-<%include file="navigation.html" args="active_page=''" />
+<%include file="course_navigation.html" args="active_page=''" />
+
 <section class="container">
 <div class="gradebook-wrapper">
   <section class="gradebook-content">
@@ -28,7 +30,7 @@
     %if len(students) > 0:
     <table>
       <%
-      templateSummary = students[0]['grade_info']['grade_summary']
+      templateSummary = students[0]['grade_summary']
       %>
       
       
@@ -42,15 +44,15 @@
       
       <%def name="percent_data(percentage)">
         <%
-          data_class = "grade_none"
-          if percentage > .87:
-            data_class = "grade_a"
-          elif percentage > .70:
-            data_class = "grade_b"
-          elif percentage > .6:
-            data_class = "grade_c"
-          elif percentage > 0:
-              data_class = "grade_f"
+          letter_grade = 'None'
+          if percentage > 0:
+            letter_grade = 'F'
+            for grade in ['A', 'B', 'C']:
+              if percentage >= course.grade_cutoffs[grade]:
+                letter_grade = grade
+                break
+          
+          data_class = "grade_" + letter_grade
         %>
         <td class="${data_class}">${ "{0:.0%}".format( percentage ) }</td>
       </%def>
@@ -58,10 +60,10 @@
       %for student in students:
       <tr>
         <td><a href="/profile/${student['id']}/">${student['username']}</a></td>
-        %for section in student['grade_info']['grade_summary']['section_breakdown']:
+        %for section in student['grade_summary']['section_breakdown']:
           ${percent_data( section['percent'] )}
         %endfor
-        <th>${percent_data( student['grade_info']['grade_summary']['percent'])}</th>
+        <th>${percent_data( student['grade_summary']['percent'])}</th>
       </tr>
       %endfor
     </table>
diff --git a/lms/templates/main.html b/lms/templates/main.html
index 808505bdcf..51b8d6030e 100644
--- a/lms/templates/main.html
+++ b/lms/templates/main.html
@@ -26,9 +26,9 @@
   <%include file="navigation.html" />
   <section class="content-wrapper">
     ${self.body()}
+    <%block name="bodyextra"/>
   </section>
 
-  <%block name="bodyextra"/>
   <%include file="footer.html" />
 
   <%static:js group='application'/>
diff --git a/lms/templates/portal/course_about.html b/lms/templates/portal/course_about.html
index a3bf8dd755..36ec33607f 100644
--- a/lms/templates/portal/course_about.html
+++ b/lms/templates/portal/course_about.html
@@ -20,7 +20,7 @@
           if(json.success) {
             location.href="${reverse('dashboard')}";
           }else{
-	    $('#register_message).html("<p><font color='red'>" + json.error + "</font></p>")
+	    $('#register_message').html("<p><font color='red'>" + json.error + "</font></p>");
           }
         });
       })(this)
diff --git a/lms/templates/profile.html b/lms/templates/profile.html
index 8107bb1923..a6e28c6e57 100644
--- a/lms/templates/profile.html
+++ b/lms/templates/profile.html
@@ -18,99 +18,98 @@
 <script type="text/javascript" src="${static.url('js/vendor/flot/jquery.flot.stack.js')}"></script>
 <script type="text/javascript" src="${static.url('js/vendor/flot/jquery.flot.symbol.js')}"></script>
 <script>
-${profile_graphs.body(grade_summary, "grade-detail-graph")}
+${profile_graphs.body(grade_summary, course.grade_cutoffs, "grade-detail-graph")}
 </script>
 
 <script>
 var loc=true; // Activate on clicks? Not if already clicked.
 var lang=true;
 $(function() {
-      $("#change_location").click(function() {
-         $(this).hide();
+    $("#change_location").click(function() {
+       $(this).hide();
 
-         log_event("profile", {"type":"location_show", "old":$("#location_sub").text()});
+       log_event("profile", {"type":"location_show", "old":$("#location_sub").text()});
 
-         if(loc) {
-           $("#description").html('<div>'+
-                                  "Preferred format is city, state, country (so for us, "+
-                                  "&quot;Cambridge, Massachusetts, USA&quot;), but give "+
-                                  "as much or as little detail as you want. </div>");
+       if(loc) {
+         $("#description").html('<div>'+
+                                "Preferred format is city, state, country (so for us, "+
+                                "&quot;Cambridge, Massachusetts, USA&quot;), but give "+
+                                "as much or as little detail as you want. </div>");
 
-           loc=false;
+         loc=false;
 
-           $("#location_sub").html('<form>'+'<input id="id_loc_text" type="text" name="loc_text" />'+
-             '<input type="submit" id="change_loc_button" value="Save" />'+'</form>');
+         $("#location_sub").html('<form>'+'<input id="id_loc_text" type="text" name="loc_text" />'+
+           '<input type="submit" id="change_loc_button" value="Save" />'+'</form>');
 
-           $("#change_loc_button").click(function() {
-             $("#change_location").show();
+         $("#change_loc_button").click(function() {
+           $("#change_location").show();
 
-              postJSON('/change_setting', {'location':$("#id_loc_text").attr("value")}, function(json) {
-                $("#location_sub").text(json.location);
-                loc=true;
-                $("#description").html("");
-               log_event("profile", {"type":"location_change", "new":json.location});
-              });
-           });
-         }
-      });
-
-      $('#change_password').click(function(){
-        $('.modal').trigger('click');
-        log_event("profile", {"type":"password_show"});
-      });
-
-    $('#pwd_reset_button').click(function() {
-      $.postWithPrefix('/password_reset/',{ "csrfmiddlewaretoken" : "${ csrf }",
-                    "email"  : $('#id_email').val()}, function(data){
-         $("#password_reset_complete_link").click();
-         log_event("profile", {"type":"password_send"});
-      });
+            postJSON('/change_setting', {'location':$("#id_loc_text").attr("value")}, function(json) {
+              $("#location_sub").text(json.location);
+              loc=true;
+              $("#description").html("");
+             log_event("profile", {"type":"location_change", "new":json.location});
+            });
+         });
+       }
     });
 
-
-    $("#change_email_form").submit(function(){
-      var new_email = $('#new_email_field').val();
-      var new_password = $('#new_email_password').val();
-
-      postJSON('/change_email',{"new_email":new_email,
-                                "password":new_password},
-               function(data){
-          if(data.success){
-          $("#change_email").html("<h1>Please verify your new email</h1><p>You'll receive a confirmation in your in-box. Please click the link in the email to confirm the email change.</p>");
-          } else {
-            $("#change_email_error").html(data.error);
-          }
-       });
-       log_event("profile", {"type":"email_change_request",
-                               "old_email":"${email}",
-                               "new_email":new_email});
-       return false;
+    $('#change_password').click(function(){
+      $('.modal').trigger('click');
+      log_event("profile", {"type":"password_show"});
     });
 
-    $("#change_name_form").submit(function(){
-      var new_name = $('#new_name_field').val();
-      var rationale = $('#name_rationale_field').val();
-
-      postJSON('/change_name',{"new_name":new_name,
-                                "rationale":rationale},
-               function(data){
-          if(data.success){
-          $("#apply_name_change").html("<h1>Your request has been submitted.</h1><p>We'll send you an e-mail when approve the change or need further information. Please allow for up to a week for us to process your request.</p>");
-          } else {
-            $("#change_name_error").html(data.error);
-          }
-       });
-       log_event("profile", {"type":"name_change_request",
-                               "new_name":new_name,
-                               "rationale":rationale});
-       return false;
+  $('#pwd_reset_button').click(function() {
+    $.postWithPrefix('/password_reset/',{ "csrfmiddlewaretoken" : "${ csrf }",
+                  "email"  : $('#id_email').val()}, function(data){
+       $("#password_reset_complete_link").click();
+       log_event("profile", {"type":"password_send"});
     });
+  });
+
+
+  $("#change_email_form").submit(function(){
+    var new_email = $('#new_email_field').val();
+    var new_password = $('#new_email_password').val();
+
+    postJSON('/change_email',{"new_email":new_email,
+                              "password":new_password},
+             function(data){
+        if(data.success){
+        $("#change_email").html("<h1>Please verify your new email</h1><p>You'll receive a confirmation in your in-box. Please click the link in the email to confirm the email change.</p>");
+        } else {
+          $("#change_email_error").html(data.error);
+        }
+     });
+     log_event("profile", {"type":"email_change_request",
+                             "old_email":"${email}",
+                             "new_email":new_email});
+     return false;
+  });
+
+  $("#change_name_form").submit(function(){
+    var new_name = $('#new_name_field').val();
+    var rationale = $('#name_rationale_field').val();
+
+    postJSON('/change_name',{"new_name":new_name,
+                              "rationale":rationale},
+             function(data){
+        if(data.success){
+        $("#apply_name_change").html("<h1>Your request has been submitted.</h1><p>We'll send you an e-mail when approve the change or need further information. Please allow for up to a week for us to process your request.</p>");
+        } else {
+          $("#change_name_error").html(data.error);
+        }
+     });
+     log_event("profile", {"type":"name_change_request",
+                             "new_name":new_name,
+                             "rationale":rationale});
+     return false;
+  });
 
 });
 </script>
 </%block>
 
-
 <%include file="course_navigation.html" args="active_page='profile'" />
 
 <section class="container">
@@ -139,19 +138,26 @@ $(function() {
               %>
 
               <h3><a href="${reverse('courseware_section', kwargs={'course_id' : course.id, 'chapter' : chapter['url_name'], 'section' : section['url_name']})}">
-                ${ section['display_name'] }</a> ${"({0:.3n}/{1:.3n}) {2}".format( float(earned), float(total), percentageString )}</h3>
-              ${section['format']}
-              %if 'due' in section and section['due']!="":
-                due ${section['due']}
-              %endif
+                ${ section['display_name'] }</a><span> ${"({0:.3n}/{1:.3n}) {2}".format( float(earned), float(total), percentageString )}</span></h3>
+              <p>
+                ${section['format']}
+
+                %if 'due' in section and section['due']!="":
+                  <em>
+                  due ${section['due']}
+                  </em>
+                %endif
+              </p>
 
               %if len(section['scores']) > 0:
-                <ol class="scores">
-                  ${ "Problem Scores: " if section['graded'] else "Practice Scores: "}
-                  %for score in section['scores']:
-                    <li class="score">${"{0:.3n}/{1:.3n}".format(float(score.earned),float(score.possible))}</li>
-                  %endfor
-                </ol>
+                <section class="scores">
+                  <h3> ${ "Problem Scores: " if section['graded'] else "Practice Scores: "} </h3>
+                  <ol>
+                    %for score in section['scores']:
+                    <li>${"{0:.3n}/{1:.3n}".format(float(score.earned),float(score.possible))}</li>
+                    %endfor
+                  </ol>
+                </section>
               %endif
 
             </li> <!--End section-->
@@ -202,7 +208,7 @@ $(function() {
   </div>
 </section>
 
-<div id="password_reset_complete" class="leanModal_box">
+<div id="password_reset_complete" class="modal">
   <a href="#password_reset_complete" rel="leanModal" id="password_reset_complete_link"></a>
   <h1>Password Reset Email Sent</h1>
   <p>
@@ -210,83 +216,78 @@ $(function() {
   </p>
 </div>
 
-<div id="apply_name_change" class="leanModal_box">
-  <h1>Apply to change your name</h1>
-  <form id="change_name_form">
-    <div id="change_name_error"> </div>
-    <fieldset>
-      <p>To uphold the credibility of <span class="edx">edX</span> certificates, name changes must go through an approval process. A member of the course staff will review your request, and if approved, update your information. Please allow up to a week for your request to be processed. Thank you.</p>
-      <ul>
-        <li>
-          <label>Enter your desired full name, as it will appear on the <span class="edx">edX</span> Certificate: </label>
-          <input id="new_name_field" value="" type="text" />
-        </li>
-        <li>
-          <label>Reason for name change:</label>
-          <textarea id="name_rationale_field" value=""></textarea>
-        </li>
-        <li>
-          <input type="submit" id="submit">
-        </li>
-      </ul>
-    </fieldset>
-  </form>
+<div id="apply_name_change" class="modal">
+  <div class="inner-wrapper">
+    <header>
+      <h2>Apply to change your name</h2>
+      <hr />
+    </header>
+    <form id="change_name_form">
+      <div id="change_name_error"> </div>
+      <fieldset>
+        <p>To uphold the credibility of <span class="edx">edX</span> certificates, name changes must go through an approval process. A member of the course staff will review your request, and if approved, update your information. Please allow up to a week for your request to be processed. Thank you.</p>
+        <label>Enter your desired full name, as it will appear on the <span class="edx">edX</span> Certificate: </label>
+        <input id="new_name_field" value="" type="text" />
+        <label>Reason for name change:</label>
+        <textarea id="name_rationale_field" value=""></textarea>
+        <input type="submit" id="submit">
+      </fieldset>
+    </form>
+  </div>
 </div>
 
-<div id="change_email" class="leanModal_box">
-  <h1>Change e-mail</h1>
+<div id="change_email" class="modal">
+  <div class="inner-wrapper">
+  <header>
+    <h2>Change e-mail</h2>
+    <hr />
+  </header>
   <div id="apply_name_change_error"></div>
   <form id="change_email_form">
     <div id="change_email_error"> </div>
     <fieldset>
-      <ul>
-        <li>
-          <label> Please enter your new email address: </label>
-          <input id="new_email_field" type="email" value="" />
-        </li>
+      <label> Please enter your new email address: </label>
+      <input id="new_email_field" type="email" value="" />
+      <label> Please confirm your password: </label>
+      <input id="new_email_password" value="" type="password" />
+      <p>We will send a confirmation to both ${email} and your new e-mail as part of the process.</p>
+      <input type="submit" id="submit_email_change" />
+    </fieldset>
+  </form>
+  </div>
+</div>
 
-        <li>
-          <label> Please confirm your password: </label>
-          <input id="new_email_password" value="" type="password" />
-        </li>
-        <li>
-          <p>We will send a confirmation to both ${email} and your new e-mail as part of the process.</p>
-          <input type="submit" id="submit_email_change" />
-        </li>
-      </ul>
+<div id="deactivate-account" class="modal">
+  <div class="inner-wrapper">
+    <header>
+      <h2>Deactivate <span class="edx">edX</span> Account</h2>
+      <hr />
+    </header>
+    <p>Once you deactivate you&rsquo;re MIT<em>x</em> account you will no longer recieve updates and new class announcements from MIT<em>x</em>.</p>
+    <p>If you&rsquo;d like to still get updates and new class announcements you can just <a href="#unenroll" rel="leanModal">unenroll</a> and keep your account active.</p>
+
+    <form id="unenroll_form">
+      <div id="unenroll_error"> </div>
+      <fieldset>
+        <input type="submit" id="" value="Yes, I don't want an edX account or hear about any new classes or updates to edX" />
       </fieldset>
     </form>
+  </div>
 </div>
 
-<div id="deactivate-account" class="leanModal_box">
-  <h1>Deactivate <span class="edx">edX</span> Account</h1>
-  <p>Once you deactivate you&rsquo;re MIT<em>x</em> account you will no longer recieve updates and new class announcements from MIT<em>x</em>.</p>
-  <p>If you&rsquo;d like to still get updates and new class announcements you can just <a href="#unenroll" rel="leanModal">unenroll</a> and keep your account active.</p>
+<div id="unenroll" class="modal">
+  <div class="inner-wrapper">
+    <header>
+      <h2>Unenroll from 6.002x</h2>
+      <hr />
+    </header>
+    <p>Please note: you will still receive updates and new class announcements from ed<em>X</em>. If you don&rsquo;t wish to receive any more updates or announcements <a href="#deactivate-account" rel="leanModal">deactivate your account</a>.</p>
 
-  <form id="unenroll_form">
-    <div id="unenroll_error"> </div>
-    <fieldset>
-      <ul>
-        <li>
-          <input type="submit" id="" value="Yes, I don't want an edX account or hear about any new classes or updates to edX" />
-        </li>
-      </ul>
-    </fieldset>
-  </form>
-</div>
-
-<div id="unenroll" class="leanModal_box">
-  <h1>Unenroll from 6.002x</h1>
-  <p>Please note: you will still receive updates and new class announcements from ed<em>X</em>. If you don&rsquo;t wish to receive any more updates or announcements <a href="#deactivate-account" rel="leanModal">deactivate your account</a>.</p>
-
-  <form id="unenroll_form">
-    <div id="unenroll_error"> </div>
-    <fieldset>
-      <ul>
-        <li>
-          <input type="submit" id="" value="Yes, I want to unenroll from 6.002x but still hear about any new classes or updates to edX" />
-        </li>
-      </ul>
-    </fieldset>
-  </form>
+    <form id="unenroll_form">
+      <div id="unenroll_error"> </div>
+      <fieldset>
+        <input type="submit" id="" value="Yes, I want to unenroll from 6.002x but still hear about any new classes or updates to edX" />
+      </fieldset>
+    </form>
+  </div>
 </div>
diff --git a/lms/templates/profile_graphs.js b/lms/templates/profile_graphs.js
index 58dbeb8ed9..9826250331 100644
--- a/lms/templates/profile_graphs.js
+++ b/lms/templates/profile_graphs.js
@@ -1,6 +1,7 @@
-<%page args="grade_summary, graph_div_id, **kwargs"/>
+<%page args="grade_summary, grade_cutoffs, graph_div_id, **kwargs"/>
 <%!
   import json
+  import math
 %>
 
 $(function () {
@@ -89,8 +90,16 @@ $(function () {
   ticks += [ [overviewBarX, "Total"] ]
   tickIndex += 1 + sectionSpacer
   
-  totalScore = grade_summary['percent']
+  totalScore = math.floor(grade_summary['percent'] * 100) / 100 #We floor it to the nearest percent, 80.9 won't show up like a 90 (an A)
   detail_tooltips['Dropped Scores'] = dropped_score_tooltips
+  
+  
+  ## ----------------------------- Grade cutoffs ------------------------- ##
+  
+  grade_cutoff_ticks = [ [1, "100%"], [0, "0%"] ]
+  for grade in ['A', 'B', 'C']:
+      percent = grade_cutoffs[grade]
+      grade_cutoff_ticks.append( [ percent, "{0} {1:.0%}".format(grade, percent) ] )
   %>
   
   var series = ${ json.dumps( series ) };
@@ -98,6 +107,7 @@ $(function () {
   var bottomTicks = ${ json.dumps(bottomTicks) };
   var detail_tooltips = ${ json.dumps(detail_tooltips) };
   var droppedScores = ${ json.dumps(droppedScores) };
+  var grade_cutoff_ticks = ${ json.dumps(grade_cutoff_ticks) }
   
   //Alwasy be sure that one series has the xaxis set to 2, or the second xaxis labels won't show up
   series.push( {label: 'Dropped Scores', data: droppedScores, points: {symbol: "cross", show: true, radius: 3}, bars: {show: false}, color: "#333"} );
@@ -107,10 +117,10 @@ $(function () {
               lines: {show: false, steps: false },
               bars: {show: true, barWidth: 0.8, align: 'center', lineWidth: 0, fill: .8 },},
     xaxis: {tickLength: 0, min: 0.0, max: ${tickIndex - sectionSpacer}, ticks: ticks, labelAngle: 90},
-    yaxis: {ticks: [[1, "100%"], [0.87, "A 87%"], [0.7, "B 70%"], [0.6, "C 60%"], [0, "0%"]], min: 0.0, max: 1.0, labelWidth: 50},
+    yaxis: {ticks: grade_cutoff_ticks, min: 0.0, max: 1.0, labelWidth: 50},
     grid: { hoverable: true, clickable: true, borderWidth: 1,
-      markings: [ {yaxis: {from: 0.87, to: 1 }, color: "#ddd"}, {yaxis: {from: 0.7, to: 0.87 }, color: "#e9e9e9"}, 
-                  {yaxis: {from: 0.6, to: 0.7 }, color: "#f3f3f3"}, ] },
+      markings: [ {yaxis: {from: ${grade_cutoffs['A']}, to: 1 }, color: "#ddd"}, {yaxis: {from: ${grade_cutoffs['B']}, to: ${grade_cutoffs['A']} }, color: "#e9e9e9"}, 
+                  {yaxis: {from: ${grade_cutoffs['C']}, to: ${grade_cutoffs['B']} }, color: "#f3f3f3"}, ] },
     legend: {show: false},
   };
   
diff --git a/lms/templates/simplewiki/simplewiki_base.html b/lms/templates/simplewiki/simplewiki_base.html
index 6777af1b82..04a239b6c3 100644
--- a/lms/templates/simplewiki/simplewiki_base.html
+++ b/lms/templates/simplewiki/simplewiki_base.html
@@ -71,9 +71,9 @@
 
   });
   </script>
-  
+
   <%block name="wiki_head"/>
-  
+
 </%block>
 
 <%block name="bodyextra">
@@ -86,7 +86,7 @@
   <div class="wiki-wrapper">
     <%block name="wiki_panel">
     <div aria-label="Wiki Navigation" id="wiki_panel">
-    <h2>Course Wiki</h2>
+      <h2>Course Wiki</h2>
       <ul class="action">
         <li>
           <h3>
@@ -101,12 +101,12 @@
 
           <div id="wiki_create_form">
             <%
-              baseURL = wiki_reverse("wiki_create", course=course, kwargs={"article_path" : namespace + "/" })
+            baseURL = wiki_reverse("wiki_create", course=course, kwargs={"article_path" : namespace + "/" })
             %>
             <form method="GET" onsubmit="this.action='${baseURL}' + this.wiki_article_name.value.replace(/([^a-zA-Z0-9\-])/g, '');">
               <div>
                 <label for="id_wiki_article_name">Title of article</label>
-                <input type="text" name="wiki_article_name" id="id_wiki_article_name" /><br/>
+                <input type="text" name="wiki_article_name" id="id_wiki_article_name" />
               </div>
               <ul>
                 <li>
@@ -130,31 +130,31 @@
     </%block>
 
     <section class="wiki-body">
-        %if wiki_article is not UNDEFINED:
-        <header>
-          %if wiki_article.locked:
-          <p><strong>This article has been locked</strong></p>
-          %endif
-          <p>Last modified: ${wiki_article.modified_on.strftime("%b %d, %Y, %I:%M %p")}</p>
-          %endif
-
-          %if wiki_article is not UNDEFINED:
-          <ul>
-
-            <li>
-              <a href="${ wiki_reverse('wiki_view', wiki_article, course)}" class="view">View</a>
-            </li>
-
-            <li>
-              <a href="${ wiki_reverse('wiki_edit', wiki_article, course)}" class="edit">Edit</a>
-            </li>
-
-            <li>
-              <a href="${ wiki_reverse('wiki_history', wiki_article, course)}" class="history">History</a>
-            </li>
-          </ul>
-        </header>
+      %if wiki_article is not UNDEFINED:
+      <header>
+        %if wiki_article.locked:
+        <p><strong>This article has been locked</strong></p>
         %endif
+        <p>Last modified: ${wiki_article.modified_on.strftime("%b %d, %Y, %I:%M %p")}</p>
+        %endif
+
+        %if wiki_article is not UNDEFINED:
+        <ul>
+
+          <li>
+            <a href="${ wiki_reverse('wiki_view', wiki_article, course)}" class="view">View</a>
+          </li>
+
+          <li>
+            <a href="${ wiki_reverse('wiki_edit', wiki_article, course)}" class="edit">Edit</a>
+          </li>
+
+          <li>
+            <a href="${ wiki_reverse('wiki_history', wiki_article, course)}" class="history">History</a>
+          </li>
+        </ul>
+      </header>
+      %endif
 
       <%block name="wiki_page_title"/>
       <%block name="wiki_body"/>
diff --git a/lms/templates/simplewiki/simplewiki_edit.html b/lms/templates/simplewiki/simplewiki_edit.html
index 7618dd629c..856dfb9cc8 100644
--- a/lms/templates/simplewiki/simplewiki_edit.html
+++ b/lms/templates/simplewiki/simplewiki_edit.html
@@ -65,12 +65,10 @@ ${"Edit " + wiki_title + " - " if wiki_title is not UNDEFINED else ""}MITx 6.002
   </div>
   ${wiki_form}
   %if create_article:
-  <input type="submit" id="submit_edit" value="Create article" /></td>
+  <input type="submit" id="submit_edit" value="Create article" />
   %else:
   <input type="submit" id="submit_edit" name="edit" value="Save Changes" />
   <input type="submit" id="submit_delete" name="delete" value="Delete article" />
-  %endif
-</form>
 
 <%include file="simplewiki_instructions.html"/>
 
diff --git a/lms/templates/simplewiki/simplewiki_searchresults.html b/lms/templates/simplewiki/simplewiki_searchresults.html
index d94cbf9c25..e64a01ae62 100644
--- a/lms/templates/simplewiki/simplewiki_searchresults.html
+++ b/lms/templates/simplewiki/simplewiki_searchresults.html
@@ -26,7 +26,7 @@ Displaying all articles
 <li><h3><a href="${wiki_reverse("wiki_view", article, course)}">${article.title} ${'(Deleted)' if article_deleted else ''}</a></h3></li>
 %endfor
 
-%if not wiki_search_results: 
+%if not wiki_search_results:
 No articles matching <b>${wiki_search_query if wiki_search_query is not UNDEFINED else ""} </b>!
 %endif
 </ul>
diff --git a/lms/templates/staff_problem_info.html b/lms/templates/staff_problem_info.html
index c9b92c51db..c6880c4c91 100644
--- a/lms/templates/staff_problem_info.html
+++ b/lms/templates/staff_problem_info.html
@@ -2,9 +2,13 @@ ${module_content}
 %if edit_link:
 <div><a href="${edit_link}">Edit</a></div>
 % endif
+
 <div class="staff_info">
+<a href="javascript:void(0)" onclick="javascript:$('#${element_id}_debug').toggle()">Staff Debug Info</a>
+<span style="display:none" id="${element_id}_debug">
 definition = <pre>${definition | h}</pre>
 metadata = ${metadata | h}
+</span>
 </div>
 %if render_histogram:
 <div id="histogram_${element_id}" class="histogram" data-histogram="${histogram}"></div>
diff --git a/lms/templates/staticbook.html b/lms/templates/staticbook.html
index eae70cdd84..dbc5bb1cec 100644
--- a/lms/templates/staticbook.html
+++ b/lms/templates/staticbook.html
@@ -89,17 +89,6 @@ $("#open_close_accordion a").click(function(){
         </nav>
 
         <img id="bookpage" src="${ settings.BOOK_URL }p${ "%03i"%(page) }.png">
-
-        <nav class="bottom-nav">
-          <ul>
-            <li class="last">
-              <a href="javascript:prev_page()">Previous page</a>
-            </li>
-            <li class="next">
-              <a href="javascript:next_page()">Next page</a>
-            </li>
-          </ul>
-        </nav>
       </section>
     </section>
   </div>
diff --git a/lms/urls.py b/lms/urls.py
index 8c230bb50d..42922e09f2 100644
--- a/lms/urls.py
+++ b/lms/urls.py
@@ -107,7 +107,6 @@ if settings.COURSEWARE_ENABLED:
 
         # TODO: These views need to be updated before they work
         # url(r'^calculate$', 'util.views.calculate'),
-        # url(r'^gradebook$', 'courseware.views.gradebook'),
         # TODO: We should probably remove the circuit package. I believe it was only used in the old way of saving wiki circuits for the wiki
         # url(r'^edit_circuit/(?P<circuit>[^/]*)$', 'circuit.views.edit_circuit'),
         # url(r'^save_circuit/(?P<circuit>[^/]*)$', 'circuit.views.save_circuit'),
@@ -119,7 +118,7 @@ if settings.COURSEWARE_ENABLED:
         #About the course
         url(r'^courses/(?P<course_id>[^/]+/[^/]+/[^/]+)/about$',
             'courseware.views.course_about', name="about_course"),
-
+        
         #Inside the course
         url(r'^courses/(?P<course_id>[^/]+/[^/]+/[^/]+)/info$',
             'courseware.views.course_info', name="info"),
@@ -143,6 +142,10 @@ if settings.COURSEWARE_ENABLED:
         # discussion
         url(r'^courses/(?P<course_id>[^/]+/[^/]+/[^/]+)/discussion/',
             include('django_comment_client.urls')),
+        
+        # For the instructor
+        url(r'^courses/(?P<course_id>[^/]+/[^/]+/[^/]+)/gradebook$',
+            'courseware.views.gradebook'),        
     )
 
     # Multicourse wiki
diff --git a/rakefile b/rakefile
index 01491ce981..caf0d58f2f 100644
--- a/rakefile
+++ b/rakefile
@@ -83,13 +83,20 @@ end
     task :pylint => "pylint_#{system}"
 end
 
+$failed_tests = 0
 
-def run_tests(system, report_dir)
+def run_tests(system, report_dir, stop_on_failure=true)
     ENV['NOSE_XUNIT_FILE'] = File.join(report_dir, "nosetests.xml")
     ENV['NOSE_COVER_HTML_DIR'] = File.join(report_dir, "cover")
-    sh(django_admin(system, :test, 'test', *Dir["#{system}/djangoapps/*"].each))
+    sh(django_admin(system, :test, 'test', *Dir["#{system}/djangoapps/*"].each)) do |ok, res|
+        if !ok and stop_on_failure
+            abort "Test failed!"
+        end
+        $failed_tests += 1 unless ok
+    end
 end
 
+TEST_TASKS = []
 
 [:lms, :cms].each do |system|
     report_dir = File.join(REPORT_DIR, system.to_s)
@@ -97,15 +104,16 @@ end
 
     # Per System tasks
     desc "Run all django tests on our djangoapps for the #{system}"
-    task "test_#{system}" => ["clean_test_files", "#{system}:collectstatic:test", "fasttest_#{system}"]
+    task "test_#{system}", [:stop_on_failure] => ["clean_test_files", "#{system}:collectstatic:test", "fasttest_#{system}"]
 
     # Have a way to run the tests without running collectstatic -- useful when debugging without
     # messing with static files.
-    task "fasttest_#{system}" => [report_dir, :predjango] do
-        run_tests(system, report_dir)
+    task "fasttest_#{system}", [:stop_on_failure] => [report_dir, :predjango] do |t, args|
+        args.with_defaults(:stop_on_failure => 'true')
+        run_tests(system, report_dir, args.stop_on_failure)
     end
 
-    task :test => "test_#{system}"
+    TEST_TASKS << "test_#{system}"
 
     desc <<-desc
         Start the #{system} locally with the specified environment (defaults to dev).
@@ -142,7 +150,17 @@ Dir["common/lib/*"].each do |lib|
         ENV['NOSE_XUNIT_FILE'] = File.join(report_dir, "nosetests.xml")
         sh("nosetests #{lib} --cover-erase --with-xunit --with-xcoverage --cover-html --cover-inclusive --cover-package #{File.basename(lib)} --cover-html-dir #{File.join(report_dir, "cover")}")
     end
-    task :test => task_name
+    TEST_TASKS << task_name
+end
+
+task :test do
+    TEST_TASKS.each do |task|
+        Rake::Task[task].invoke(false)
+    end
+
+    if $failed_tests > 0
+        abort "Tests failed!"
+    end
 end
 
 task :runserver => :lms