diff --git a/student_lists/studentlists.py b/student_lists/studentlists.py
index 2a81205..9436729 100644
--- a/student_lists/studentlists.py
+++ b/student_lists/studentlists.py
@@ -54,6 +54,8 @@ def index_of_student(self, student):
 
     ## TODO add a method called is_class_full.
     # This should return True or False to indicate if the class is full.
+    def is_class_full(self):
+        if self.class_list.count == self.class_list.
 
 
     def __str__(self):
diff --git a/student_lists/test_studentlists.py b/student_lists/test_studentlists.py
index 76636fb..97d2805 100644
--- a/student_lists/test_studentlists.py
+++ b/student_lists/test_studentlists.py
@@ -10,6 +10,7 @@
 
 """
 
+from cgi import test
 from studentlists import ClassList, StudentError
 from unittest import TestCase
 
@@ -43,11 +44,19 @@ def test_add_remove_student_ensure_removed(self):
 
     ## TODO write a test that adds some example students, 
     # then removes a student not in the list, and asserts a StudentError is raised
-
+    def test_removing_student_from_populated_list_raises_student_error(self):
+        test_class = ClassList(4)
+        test_class.add_student('Example')
+        test_class.add_student('Another Example')
+        with self.assertRaises(StudentError):
+            test_class.remove_student('Not there')
 
     ## TODO write a test that removes a student from an 
     # empty list, and asserts a StudentError is raised
-
+    def test_removing_student_from_empty_list_raises_student_error(self):
+        test_class = ClassList(3)
+        with self.assertRaises(StudentError):
+            test_class.remove_student('Example')
 
 
     def test_is_enrolled_when_student_present(self):
@@ -66,7 +75,12 @@ def test_is_enrolled_empty_class_list(self):
     ## TODO write a test that adds some example students to a test class,
     ## then, call is_enrolled for a student who is not enrolled. 
     # Use assertFalse to verify is_enrolled returns False.
-
+    def test_is_enrolled_returns_false_if_student_not_enrolled(self):
+        test_class = ClassList(3)
+        test_class.add_student('Example 1')
+        test_class.add_student('Example 2')
+        test_class.add_student('Example 3')
+        self.assertFalse(test_class.is_enrolled('Example 4'))
 
     def test_string_with_students_enrolled(self):
         test_class = ClassList(2)
@@ -99,15 +113,27 @@ def test_index_of_student_student_present(self):
     ## TODO write a test for index_of_student when the class_list list is empty.  
     # Assert index_of_student returns None for a student if the list is empty. 
     # use assertIsNone.
- 
+    def test_index_of_student_returns_none_if_empty(self):
+        test_class = ClassList(4)
+        self.assertIsNone(test_class.index_of_student('Example'))
  
     ## TODO write another test for index_of_student. In the case when the 
     # class_list is not empty but has some students.
     # assert that searching for a student name that is not in the list, returns None.
-
+    def test_index_of_student_not_in_list(self):
+        test_class = ClassList(3)
+        test_class.add_student('Exapmle 1')
+        test_class.add_student('Exapmle 2')
+        test_class.add_student('Exapmle 3')
+        self.assertIsNone(test_class.index_of_student('Example 4'))
    
     ## TODO write a test for your new is_class_full method when the class is full. 
     # use assertTrue.
-    
+    def test_class_is_full(self):
+        test_class = ClassList(2)
+        test_class.add_student('Example 1')
+        test_class.add_student('Example 2')
+        self.assertTrue(test_class.)
+
     ## TODO write a test for your new is_class_full method for when is empty, 
     # and when it is not full. Use assertFalse.