diff --git a/roomlist/accounts/models.py b/roomlist/accounts/models.py
index cd6f2aa63683980c39f02867ed7917f518e18a80..b0c629d9f83580d755be276f7d41701b66185a37 100644
--- a/roomlist/accounts/models.py
+++ b/roomlist/accounts/models.py
@@ -89,8 +89,8 @@ class Student(TimeStampedModel):
     privacy = models.CharField(max_length=100, choices=PRIVACY_CHOICES, default=FLOOR)
 
     room = models.ForeignKey(Room, null=True, blank=True)
-    clas = models.ForeignKey(Class)
-    major = models.ForeignKey('Major')
+    clas = models.ForeignKey(Class, null=True, blank=True)
+    major = models.ForeignKey('Major', null=True, blank=True)
 
     # social media accounts
 
diff --git a/roomlist/housing/models.py b/roomlist/housing/models.py
index 9ee415894f1ce2cbe2e59f8ef8600e4c06679195..491aab411b3de7c2bc3f3598f0f83daa060744f9 100644
--- a/roomlist/housing/models.py
+++ b/roomlist/housing/models.py
@@ -113,7 +113,7 @@ class Room(TimeStampedModel):
 #        return self.street
 
 class Class(TimeStampedModel):
-    year_int = models.IntegerField()
+    grad_year = models.PositiveIntegerField()
     FRESHMAN = 'FR'
     SOPHOMORE = 'SO'
     JUNIOR = 'JR'