School Management Android App Development

I need an Android app for a school that will be used by students, teachers, parents, the principal, and admin. The app should include the following key features:

- Login/Signup
- Timetable
- Notices/Announcements
- Homework/Assignments
- Attendance
- Marks/Results
- Chat or Messaging
- Fee Payment

Ideal Skills and Experience:
- Proficiency in Android app development
- Experience with user authentication and secure login systems
- Knowledge of real-time messaging integration
- Familiarity with database management for dynamic content like timetables and announcements
- UI/UX design skills for a user-friendly experience

Please provide examples of similar work done.