diff --git a/migrations/20231024195850_cl_4/migration.sql b/migrations/20231024195850_cl_4/migration.sql
new file mode 100644
index 0000000..688e683
--- /dev/null
+++ b/migrations/20231024195850_cl_4/migration.sql
@@ -0,0 +1,28 @@
+/*
+  Warnings:
+
+  - You are about to drop the `ExamResult` table. If the table is not empty, all the data it contains will be lost.
+  - You are about to drop the `Mark` table. If the table is not empty, all the data it contains will be lost.
+
+*/
+-- DropTable
+DROP TABLE "ExamResult";
+
+-- DropTable
+DROP TABLE "Mark";
+
+-- CreateTable
+CREATE TABLE "StudentBatchForExam" (
+    "id" TEXT NOT NULL,
+    "name" TEXT NOT NULL,
+    "students" JSONB NOT NULL,
+    "studentsCount" INTEGER NOT NULL,
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt" TIMESTAMP(3) NOT NULL,
+    "createdById" TEXT NOT NULL,
+
+    CONSTRAINT "StudentBatchForExam_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateIndex
+CREATE INDEX "StudentBatchForExam_createdById_idx" ON "StudentBatchForExam"("createdById");