BuddyPress.org

I want to setup a social media website for my local school using buddypress. I am struggling on how to best create relationships between students, teachers and parents in buddypress.

e.g.
1 student = (1 or many) parents
1 teacher = (1 or many) students
1 class = (1 or many students)
1 teacher = (1 or many class)
etc

I dont want to create user logins for students, as this portal will be primarily used by parents and teachers. A class would be a Group in buddy press. I want a teacher to be able to see a list of all the student in a given class and parent to be able to see the list of theis kid’s teachers by class.