I need a complete teaching platform that runs smoothly on both Android and any modern web browser. The core experience must let teachers stream live video lessons, students answer interactive quizzes in real time, and everyone see clear progress reports that update automatically. Three distinct roles have to coexist inside the same code-base: • Students join classes, watch live sessions, take quizzes, and track their own results. • Teachers schedule and start the live videos, create question banks, review quiz analytics, and view class-level progress. • Administrators manage user accounts, course catalogs, and system-wide settings. Because the product will live on two fronts—mobile (Android) and browser (Web)—I’m expecting a single shared backend (REST or GraphQL) with secure authentication, a real-time video solution (WebRTC, Agora.io, or similar), and a database that scales gracefully as the user base grows. Deliverables I want to see: 1. Fully functional Android APK and responsive web app with identical feature sets. 2. Backend source code, schema, and deployment scripts. 3. Clean UI/UX with intuitive navigation for all three roles. 4. Admin panel documentation plus a short video walkthrough showing every critical feature. 5. Final hand-off of source in Git, with build instructions and a brief test report proving that live video, quiz flow, and progress tracking work end-to-end. I’m happy to discuss frameworks (React, Flutter, Angular, etc.) as long as you can guarantee stable live streaming, instant quiz feedback, and accurate analytics. If you’ve built similar ed-tech solutions, please share a link; seeing a demo will speed up our conversation.