How to create more than 1 profile (of a specific content-type)?

I made a content-type "student_profile" for students to fill in their profile. I also made a content-type "parent". I want the students to be able to add more than 1 parent profile (to their own profile-page). Most students have more than 1 parent and sometimes their parents are devorced, in which case it would be usefull to have e.g. both parents addresses.

Any solutions?

Thanks,

Mike.