Hello there,
You have a great idea, every school/university needed to deliver students progress/meeting/contact/etc. If you are talking about to cover all institutes then it will be very beneficial product for you. You can make your product rental to all institutes in one development.
This will be a web based application where each institute will be registered there, institute's teachers and registration of parent of institute's student.
Hope this is what you want to make?
[For Milestone]
Every milestone will repeat in every module.