diff --git a/backend-lehrer/classroom/routes/sessions.py b/backend-lehrer/classroom/routes/sessions.py
index 55e26c6..7caeb2f 100644
--- a/backend-lehrer/classroom/routes/sessions.py
+++ b/backend-lehrer/classroom/routes/sessions.py
@@ -6,7 +6,10 @@ Combines core session routes and action routes into a single router.
 
 from fastapi import APIRouter
 
-from .sessions_core import router as core_router, build_session_response
+from .sessions_core import router as core_router, build_session_response  # noqa: F401
+
+# Re-export SessionResponse for backward compat (templates.py imports it)
+from classroom.models import SessionResponse  # noqa: F401
 from .sessions_actions import router as actions_router
 
 router = APIRouter()