Next Class QuizA modern online examination platform for schools, colleges, coaching institutes, and training organizations featuring secure quizzes, real-time results, and a clean admin dashboard.
A modern online examination platform for schools, colleges, coaching institutes, and training organizations featuring secure quizzes, real-time results, and a clean admin dashboard.
Overview
Next Class Quiz is an end-to-end educational assessment platform designed to modernize the way institutions conduct examinations. Traditional testing methods are time-consuming to grade and difficult to secure remotely. This platform solves those issues by providing teachers with an intuitive quiz builder and giving students a distraction-free, secure testing environment with instant automated grading and analytics.
System Architecture
Student Login
Firebase Auth
Fetch Exam
Firestore Realtime Sync
Answer Submission
Optimistic UI Update
Auto-Grading
Cloud Function Trigger
Analytics
Admin Dashboard Update
Challenges & Solutions
CReal-time Synchronization
Ensuring that exam timers and submission states remained accurate even if a student lost internet connection temporarily.
SLocal Storage Fallback
Implemented a robust offline-first synchronization system that caches answers locally and syncs them to Firestore once the connection is restored.
CAnti-Cheating Mechanisms
Building a secure environment that prevents tab-switching or copy-pasting during active examinations.
SVisibility API Integration
Utilized the Page Visibility API to track and warn students when navigating away from the active exam window.
CConcurrent Scaling
Handling sudden spikes in database reads/writes when an entire class of 100+ students submits their exams simultaneously at the deadline.
SBatched Writes
Optimized Firestore interactions using batched writes and localized the grading logic to highly concurrent Cloud Functions to prevent bottlenecking.
Technology Stack
Frontend
- React
- Next.js
- TypeScript
- Tailwind CSS
Backend
- Firebase Cloud Functions
- Next.js API
Database
- Firebase Firestore
Authentication
- Firebase Auth
State Management
- React Context
Deployment
- Vercel
Key Features
Role & Process
Lead Full Stack Developer
- Database Schema Design
- Real-time Sync Implementation
- Frontend Architecture
- Security Rules Configuration
- Admin Dashboard Development