buddypress profile class

i am working on a school site with buddypress. when someone registers, i would like to be able to have them 1. add their kids names as part of their profile and 2. select their kids teachers, so that they can get added to the classroom group, ideally, automatically. Is there a way to do this as part of the registration process, so people automatically get adding in to a class Group, or do you know of a plugin to do this?