Okay, it’s just one reason, but it’s an important one, via the Chronicle of Higher Education:

A former student has sued Brown University, alleging that he was suspended in the fall of 2006 without a chance to defend himself after being falsely accused of rape by the daughter of an alumnus and major donor.
The student, William R. McCormick III, claims that the university accepted the female student’s allegations without investigating, suspended him indefinitely, and gave him a one-way plane ticket home to Wisconsin. The lawsuit also alleges that after suspending Mr. McCormick, in September 2006, the university impeded his ability to gather evidence for a judicial hearing to be held later that fall. Further, it alleges that prior to the hearing, Mr. McCormick was coerced by his accuser’s lawyer into signing an agreement to leave Brown permanently.
He did so, the suit says, “under duress and under the implied threat of false criminal rape charges.” To date, no criminal charges have been filed in the case, according to the court documents.

Hat tip to College Guide.