diff --git a/models/teacher.py b/models/teacher.py
index 3f72c7e..9c8c6bf 100644
--- a/models/teacher.py
+++ b/models/teacher.py
@@ -1,5 +1,4 @@
-from sqlalchemy import (Column, Integer, String, Text,
-                        BigInteger,ForeignKey,VARCHAR,DateTime
+from sqlalchemy import (Column, Integer,VARCHAR,DateTime
                         )
 from sqlalchemy.dialects.mssql import TINYINT