ExamLock

Secure exams, live classroom workflows, and real-time proctor intervention.

DEMO

ExamLock is more than a lock screen for tests. It is a full classroom and assessment platform with:

A Flutter mobile app for both students and teachers
Role-based home layouts (RBAC) for student and teacher workflows
A web dashboard used mainly for larger-screen convenience and expanded operations
Shared real-time data and notifications through Firebase

Dedicated teacher home layout with sections such as Classes, Activities, Notes, Students, Sheet, and Archive
Create and manage classes
Publish announcements, files, and activities
Configure exam security (antiScreenshot, antiCopyPaste, examLock, randomize, passcode, exampass)
Build or attach test sheets and answer keys
Monitor students during active exams (test room flow)
Review submissions and grading flows
Manage students, class archive, and teacher notes

Web is primarily the teacher convenience layer for bigger screens and faster class operations
Teacher-only web login and role validation
Class management: create classes, share class code, manage enrollment, archive/unarchive/delete
Post management: announcements, file/link posts, and activity posts
Activity types: exam, quiz, test, assignment, homework, prelim, midterm, semi-finals, finals
Activity security setup: countdown, anti-screenshot, anti-copy/paste, randomize, exam lock, passcode, exampass
Saved sheet attachment and reusable test sheet management
Real-time Test Room with status cards, lock/unlock, and lock all/unlock all
Turn-in review with objective auto-check and manual essay scoring
Class record controls: category percentage weights + Excel export
Personal teacher notes and profile/password management

Layer	Technologies
Mobile (Student + Teacher App)	Flutter, Dart, Material UI, `flutter_windowmanager_plus`
Web (Teacher Dashboard)	HTML5, CSS3, Vanilla JavaScript (ES modules), Firebase Web SDK
Backend/Data	Firebase Realtime Database, Firebase Authentication, Cloud Firestore
Notifications	Firebase Cloud Messaging (FCM), Cloud Functions (`cloud_functions/`)
Hosting	Firebase Hosting, Netlify scripts

ExamLock runs as a dual-client system:

Mobile client (lib/): student and teacher experiences under RBAC
Web client (web/): teacher-focused convenience interface for larger displays and extended workflows

Both clients read/write shared Firebase nodes for classes, posts, testroom status, submissions, and scores.

Login using a Teacher account (mobile app or web portal).
Create/open a class, then share class code with students.
Create posts:
Announcement for updates
File/link for materials
Activity for exams/quizzes/tests/assignments
For activities, set security/timer options and attach or create a test sheet.
Open Test Room during live exams to monitor students and lock/unlock as needed (mobile or web).
Review turn-ins, score essays, and publish/update grades.
Use web for heavier convenience tasks like class record percentage setup and Excel export.

ExamLock is designed as a full classroom + assessment system, not only exam locking.
Real-time behavior depends on Firebase Realtime Database synchronization.
For production, enforce strict Firebase Security Rules and role-based access.