According to the article I quoted above, its not so much false accusations its just that a student on a campus can accuse someone with sexual assault in a broader sense than what would be touched by a regular prosecuting attorney. So a student can be expelled for much less evidence or reason. Yes, they can sue the school and take the matter to another court but who pays for that and how long will it take?
Now I perfectly understand why a university should be held responsible for the safety of its students in say the science building.
BUT, how can they be held responsible for what happens at a fraternity party or in a dorm where students are already drinking and having sex?