diff --git a/flashcards/models.py b/flashcards/models.py
index 61a2dcc..dcfdcb2 100644
--- a/flashcards/models.py
+++ b/flashcards/models.py
@@ -1,5 +1,6 @@
 from math import log1p
 from math import exp
+from math import e
 
 from django.contrib.auth.models import AbstractUser, UserManager
 from django.contrib.auth.tokens import default_token_generator
@@ -11,12 +12,12 @@ from django.core.validators import MinLengthValidator
 from django.db import IntegrityError
 from django.db.models import *
 from django.utils.timezone import now, make_aware
-from flashy.settings import QUARTER_START, QUARTER_END
+from flashy.settings import QUARTER_START
 from simple_email_confirmation import SimpleEmailConfirmationUserMixin
 from fields import MaskField
 from cached_property import cached_property
 from flashy.settings import IN_PRODUCTION
-from math import e
+
 
 
 # Hack to fix AbstractUser before subclassing it
@@ -158,7 +159,7 @@ class User(AbstractUser, SimpleEmailConfirmationUserMixin):
                 output_field=FloatField()
             ),
             retention_score=Case(
-                default=Value(e, output_field=FloatField()) ** (F('days_since')*(-0.1/(F('study_count')+1))),
+                default=Value(e, output_field=FloatField()) ** (F('days_since') * (-0.1 / (F('study_count') + 1))),
                 output_field=FloatField()
             )
         ).order_by('retention_score')
@@ -413,6 +414,9 @@ class Section(Model):
         """
         return self.whitelist.filter(email=user.email).exists()
 
+    def is_user_enrolled(self, user):
+        return self.user_set.filter(pk=user.pk).exists()
+
     def enroll(self, user):
         if user.sections.filter(pk=self.pk).exists():
             raise ValidationError('User is already enrolled in this section')
diff --git a/flashcards/serializers.py b/flashcards/serializers.py
index e67045a..e31eacd 100644
--- a/flashcards/serializers.py
+++ b/flashcards/serializers.py
@@ -75,6 +75,7 @@ class SectionSerializer(ModelSerializer):
     short_name = CharField()
     long_name = CharField()
     can_enroll = SerializerMethodField()
+    is_enrolled = SerializerMethodField()
 
     class Meta:
         model = Section
@@ -84,6 +85,10 @@ class SectionSerializer(ModelSerializer):
         if not obj.is_whitelisted: return True
         return obj.is_user_on_whitelist(self.context['user'])
 
+    def get_is_enrolled(self, obj):
+        if 'user' not in self.context: return False
+        return obj.is_user_enrolled(self.context['user'])
+
 
 class DeepSectionSerializer(SectionSerializer):
     lectures = LecturePeriodSerializer(source='lectureperiod_set', many=True, read_only=True)