diff --git a/codeforlife/user/serializers/user_test.py b/codeforlife/user/serializers/user_test.py
index c6d14075..415a1462 100644
--- a/codeforlife/user/serializers/user_test.py
+++ b/codeforlife/user/serializers/user_test.py
@@ -66,4 +66,6 @@ def test_to_representation__indy(self):
                 "teacher": None,
                 "student": None,
             },
+            # TODO: remove in new schema.
+            non_model_fields={"requesting_to_join_class", "teacher", "student"},
         )