diff --git a/app/admin/page.tsx b/app/admin/page.tsx
index c5d17e7..e60f0e1 100644
--- a/app/admin/page.tsx
+++ b/app/admin/page.tsx
@@ -6,7 +6,7 @@ import { collection, doc, getDocs, updateDoc } from 'firebase/firestore';
 import { useRouter } from 'next/navigation';
 import * as XLSX from 'xlsx';
 import QuizDetails from '../components/QuizDetails';
-import {formatDate} from '../Date';
+import { formatDate } from '../Date';
 import toast from 'react-hot-toast';
 
 const AdminPage = () => {
@@ -14,6 +14,7 @@ const AdminPage = () => {
   const router = useRouter();
   const [userData, setUserData] = useState<any[]>([]);
   const [quizData, setQuizData] = useState<any>([]);
+  const [lockStatus, setLockStatus] = useState<Record<string, boolean>>({});
 
   useEffect(() => {
     fetchQuizData();
@@ -44,7 +45,6 @@ const AdminPage = () => {
           userDataArray.push(data);
         }
       });
-      // Sort userDataArray by USN
       userDataArray.sort((a: any, b: any) => a.USN.localeCompare(b.USN));
       setUserData(userDataArray);
     } catch (error) {
@@ -68,19 +68,38 @@ const AdminPage = () => {
     try {
       const querySnapshot = await getDocs(collection(db, 'quizzes'));
       const quizDoc = querySnapshot.docs.find(doc => doc.data().data.quizName === quizName);
+
       if (quizDoc) {
         await updateDoc(doc(db, 'quizzes', quizDoc.id), {
           'data.isDeleted': true,
         });
         fetchQuizData();
-        toast.success(`Quiz ${quizName} marked as deleted.`);
+        toast.success(`Quiz "${quizName}" marked as deleted.`);
       } else {
         console.error('Quiz not found:', quizName);
-        toast.error(`Quiz ${quizName} not found.`);
+        toast.error(`Quiz "${quizName}" not found.`);
       }
     } catch (error) {
       console.error('Error deleting quiz:', error);
-      toast.error(`Error marking quiz ${quizName} as deleted.`);
+      toast.error(`Error marking quiz "${quizName}" as deleted.`);
+    }
+  };
+
+  async function handleLockUnlockQuiz(quizName: any) {
+    const querySnapshot = await getDocs(collection(db, 'quizzes'));
+    const quizDoc = querySnapshot.docs.find(doc => doc.data().data.quizName === quizName);
+
+    if (quizDoc) {
+      const currentLockStatus = quizDoc.data().data.isLocked;
+      await updateDoc(doc(db, 'quizzes', quizDoc.id), {
+        'data.isLocked': !currentLockStatus,
+      });
+      setLockStatus(prevStatus => ({ ...prevStatus, [quizName]: !currentLockStatus }));
+      fetchQuizData();
+      toast.success(`Quiz "${quizName}" ${currentLockStatus ? 'unlocked' : 'locked'} successfully.`);
+    } else {
+      console.error('Quiz not found:', quizName);
+      toast.error(`Quiz "${quizName}" not found.`);
     }
   };
 
@@ -99,11 +118,8 @@ const AdminPage = () => {
   const handleDownloadExcel = () => {
     var d = new Date();
     var n = formatDate(d);
-  
-    // Create a sorted copy of userData based on USN
+
     const sortedUserData = [...userData].sort((a: any, b: any) => a.USN.localeCompare(b.USN));
-  
-    // Flatten the sortedUserData array and include details for each quiz
     const flatData = sortedUserData.map(user => {
       const userFlat = {
         'USN': user.USN,
@@ -111,7 +127,7 @@ const AdminPage = () => {
         'Student Name': user.displayName,
         'Total Score': calculateTotalScore(user.quizData),
         // Flatten quizData array
-        ...user.quizData.reduce((acc : any, quiz : any, index : any) => ({
+        ...user.quizData.reduce((acc: any, quiz: any, index: any) => ({
           ...acc,
           [` ${quiz.quizName} `]: `${quiz.score} / ${quiz.totalQuestions}`,
           [`${quiz.quizName} Time`]: quiz.time,
@@ -122,18 +138,17 @@ const AdminPage = () => {
       };
       return userFlat;
     });
-  
+
     // Create Excel sheet
     const ws = XLSX.utils.json_to_sheet(flatData);
     const wb = XLSX.utils.book_new();
-    XLSX.utils.book_append_sheet(wb, ws, `Student Data Sheet ${n}` );
+    XLSX.utils.book_append_sheet(wb, ws, `Student Data Sheet ${n}`);
     const excelBuffer = XLSX.write(wb, { bookType: 'xlsx', type: 'array' });
     saveAsExcelFile(excelBuffer, `Student Data Sheet ${n} .xlsx`);
   };
 
   // Function to handle downloading individual quiz data
-  const handleDownloadQuiz = (quizName : any) => {
-    // Filter userData to get data for the specific quizName
+  const handleDownloadQuiz = (quizName: any) => {
     const quizData = userData.map(user => {
       const userQuiz = user.quizData.find((quiz: any) => quiz.quizName === quizName);
       return {
@@ -147,7 +162,6 @@ const AdminPage = () => {
       };
     }).filter(user => user['Quiz Name'] !== '');
 
-    // Create Excel sheet for the specific quiz
     const ws = XLSX.utils.json_to_sheet(quizData);
     const wb = XLSX.utils.book_new();
     XLSX.utils.book_append_sheet(wb, ws, `${quizName} Data`);
@@ -178,13 +192,13 @@ const AdminPage = () => {
         <div className="flex flex-wrap">
           {console.log(quizData)}
           {quizData
-            .map((quiz:any, index: any) => (
+            .map((quiz: any, index: any) => (
               <div key={index} className="mr-4 mb-4">
                 <button
                   onClick={() => handleDownloadQuiz(quiz)}
                   className={`bg-green-500 hover:bg-green-700 text-white font-bold py-2 px-4 rounded mb-4`}
                 >
-                  Download {quiz} Data
+                  Download "{quiz}" Data
                 </button>
                 <button
                   onClick={() => handleDeleteQuiz(quiz)}
@@ -192,13 +206,19 @@ const AdminPage = () => {
                 >
                   Delete
                 </button>
+                <button
+                  onClick={() => handleLockUnlockQuiz(quiz)}
+                  className={`bg-yellow-500 hover:bg-yellow-700 text-white font-bold py-2 px-4 rounded mb-4`}
+                >
+                  {lockStatus[quiz] ? 'Unlock' : 'Lock'}
+                </button>
               </div>
             ))}
         </div>
       )}
       <a
-      href='/createquiz'
-      className={`bg-blue-500 hover:bg-blue-700 text-white font-bold py-2 px-4 mx-4 rounded mb-4`}
+        href='/createquiz'
+        className={`bg-blue-500 hover:bg-blue-700 text-white font-bold py-2 px-4 mx-4 rounded mb-4`}
       >
         Create Quiz
       </a>
diff --git a/app/components/Fileinput.tsx b/app/components/Fileinput.tsx
index 3edab7c..a570e9d 100644
--- a/app/components/Fileinput.tsx
+++ b/app/components/Fileinput.tsx
@@ -2,7 +2,8 @@ import React, { useState } from "react";
 import * as XLSX from "xlsx";
 import { useDropzone } from "react-dropzone";
 import { v4 as uuidv4 } from 'uuid';
-import {useRouter} from "next/navigation";
+import { useRouter } from "next/navigation";
+
 interface FileInputProps {
   onFileUpload: (data: any) => void;
 }
@@ -13,6 +14,7 @@ interface QuizInfo {
   courseCode: string;
   id: string;
   isDeleted: boolean;
+  isLcoked: boolean;
 }
 
 interface QuizData {
@@ -31,6 +33,7 @@ function FileInput({ onFileUpload }: FileInputProps) {
     courseCode: "",
     id: uuidv4(),
     isDeleted: false,
+    isLcoked: false,
   } as QuizInfo);
   const [quizGenerated, setQuizGenerated] = useState(false);
   const [viewQuizData, setViewQuizData] = useState(false);
@@ -47,7 +50,7 @@ function FileInput({ onFileUpload }: FileInputProps) {
       const excelData = XLSX.utils.sheet_to_json(worksheet, { header: 1 });
       const quizData = condenseExcelData(excelData);
       const fileName = file.name;
-    
+
       setExcelData(quizData as any);
       setFileName(fileName);
     };
diff --git a/app/student/page.tsx b/app/student/page.tsx
index 572efc0..485d48c 100644
--- a/app/student/page.tsx
+++ b/app/student/page.tsx
@@ -7,26 +7,25 @@ import { db } from '../firebase';
 import { onAuthStateChanged } from 'firebase/auth';
 import { useRouter } from 'next/navigation';
 
-// Define a function to fetch quiz data
 async function fetchQuizData() {
-  const quizCollection = collection(db, 'quizzes');
-  const querySnapshot = await getDocs(quizCollection);
-  const quizData:any = [];
+  const querySnapshot = await getDocs(collection(db, 'quizzes'));
+  const quizData: any = [];
   querySnapshot.forEach((doc) => {
-    quizData.push(doc.data());
+    if (!doc.data().data.isDeleted && !doc.data().data.isLocked) {
+      quizData.push(doc.data());
+    }
   });
-  // console.log(quizData);
   return quizData;
 }
 
 async function fetchUserData() {
   const userCollection = collection(db, 'users');
   const querySnapshot = await getDocs(userCollection);
-  const userData:any = [];
+  const userData: any = [];
   querySnapshot.forEach((doc) => {
     userData.push(doc.data());
   });
-  const currentUserData = userData.filter((entry:any) => {
+  const currentUserData = userData.filter((entry: any) => {
     return (
       entry.uid == auth.currentUser?.uid
     );
@@ -34,25 +33,25 @@ async function fetchUserData() {
   console.log(currentUserData);
   return userData;
 }
+
 // StudentPage component
 const StudentPage = () => {
-    const router = useRouter();
+  const router = useRouter();
 
-    const [user, setUser] = useState(auth.currentUser);
-    const [userData, setUserData] = useState([]);
+  const [user, setUser] = useState(auth.currentUser);
+  const [userData, setUserData] = useState([]);
 
-    useEffect(() => {
-        // Check the user's authentication state
-        onAuthStateChanged(auth, (user) => {
-          if (user) {
-            
-            setUser(user as any);
-          } else {
-            // Redirect unauthenticated users to the login page
-            router.push('/login');
-          }
-        });
-      }, []);
+  useEffect(() => {
+    // Check the user's authentication state
+    onAuthStateChanged(auth, (user) => {
+      if (user) {
+        setUser(user as any);
+      } else {
+        // Redirect unauthenticated users to the login page
+        router.push('/login');
+      }
+    });
+  }, []);
 
   const [quizzes, setQuizzes] = useState([]);
 
@@ -66,60 +65,51 @@ const StudentPage = () => {
     }
     fetchData();
   }, []);
-  // console.log("quizzes are " + quizzes)
 
   return (
     <div className="flex flex-col items-center justify-center min-h-screen">
       {/* Quiz Cards Section */}
       <div className="mt-8 text-gray-300 text-center">
-  <h1 className="text-3xl font-semibold mb-6">Join the quiz challenge and unlock your potential!</h1>
-  <div className="flex flex-wrap justify-center mt-4">
-  {quizzes.map((quiz: any) => {
-  const userAttempts: any = userData.find(
-    (data: any) => data.uid === auth.currentUser?.uid
-  );
-
-  const isQuizAttempted =
-    userAttempts &&
-    userAttempts.quizData.some((attempt: any) => attempt.quizId === quiz.data.id);
-
-  return (
-    <div
-      key={quiz.data.id}
-      className={`bg-gradient-to-r from-customBlue to-customViolet font-black px-6 py-4 rounded-md m-4 cursor-pointer transform hover:scale-105 transition duration-300 ${
-        isQuizAttempted ? 'opacity-50' : ''
-      }`}
-    >
-      {isQuizAttempted ? (
-        <div>
-          <p className="text-lg">Quiz Name: {quiz.data.quizName}</p>
-          <p>Course: {quiz.data.course}</p>
-          <p>Course Code: {quiz.data.courseCode}</p>
-          <p>This quiz has been attempted.</p>
+        <h1 className="text-3xl font-semibold mb-6">Join the quiz challenge and unlock your potential!</h1>
+        <div className="flex flex-wrap justify-center mt-4">
+          {quizzes.map((quiz: any) => {
+            const userAttempts: any = userData.find(
+              (data: any) => data.uid === auth.currentUser?.uid
+            );
+
+            const isQuizAttempted =
+              userAttempts &&
+              userAttempts.quizData.some((attempt: any) => attempt.quizId === quiz.data.id);
+
+            return (
+              <div
+                key={quiz.data.id}
+                className={`bg-gradient-to-r from-customBlue to-customViolet font-black px-6 py-4 rounded-md m-4 cursor-pointer transform hover:scale-105 transition duration-300 ${isQuizAttempted ? 'opacity-50' : ''
+                  }`}
+              >
+                {isQuizAttempted ? (
+                  <div>
+                    <p className="text-lg">Quiz Name: {quiz.data.quizName}</p>
+                    <p>Course: {quiz.data.course}</p>
+                    <p>Course Code: {quiz.data.courseCode}</p>
+                    <p>This quiz has been attempted.</p>
+                  </div>
+                ) : (
+                  <Link
+                    href={`/quiz?id=${quiz.data.id}&name=${quiz.data.quizName}&course=${quiz.data.course}&coursecode=${quiz.data.courseCode}`}
+                  >
+                    <div>
+                      <p className="text-lg">Quiz Name: {quiz.data.quizName}</p>
+                      <p>Course: {quiz.data.course}</p>
+                      <p>Course Code: {quiz.data.courseCode}</p>
+                    </div>
+                  </Link>
+                )}
+              </div>
+            );
+          })}
         </div>
-      ) : (
-        <Link
-          href={`/quiz?id=${quiz.data.id}&name=${quiz.data.quizName}&course=${quiz.data.course}&coursecode=${quiz.data.courseCode}`}
-        >
-          <div>
-            <p className="text-lg">Quiz Name: {quiz.data.quizName}</p>
-            <p>Course: {quiz.data.course}</p>
-            <p>Course Code: {quiz.data.courseCode}</p>
-          </div>
-        </Link>
-      )}
-    </div>
-  );
-})}
-
-
-
-
-
-
-  </div>
-</div>
-
+      </div>
     </div>
   );
 };