diff --git a/controllers/auth/auth.js b/controllers/auth/auth.js
index a1ce378..1519b58 100644
--- a/controllers/auth/auth.js
+++ b/controllers/auth/auth.js
@@ -821,6 +821,15 @@ export const registerStudentCSV = async (req, res) => {
 
     await transaction.commit();
 
+    if (processed.length === 0) {
+      return response(
+        400,
+        null,
+        "No students were registered. All entries are duplicates.",
+        res
+      );
+    }
+
     response(
       200,
       {