Is my university/school/college legally allowed to prohibit a student from going to the police to report a sexual assault?

A very close friend of mine was recently raped. After building up her courage, she went to our college's Public Safety and Department of Student Affairs, and reported it to them. After doing so, she was informed that she was not permitted to go to the police to report the crime (according to some school policy that the administrator was unable to produce a written copy of), or to go to a lawyer about it, under penalty of expulsion. I'm not all too familiar with Title IX (which addresses sexual misconduct that occurs on college campuses), but I feel like this would probably be addressed in there. My friend is becoming very frustrated, because after a month the school still has not done anything with regards to the man in question, and having to see him on and around campus every day is causing her severe emotional distress. As such, she wants to go to the police, but is hesitant to because of the school's mystery policy, and doesn't want her life ruined any more than it already is.