The University student conduct code is separate from the criminal justice system.  A behavior may violate either one or both....or, of course, neither.  For example, I've mentioned cheating on a final exam.....almost surely no criminal charge, but a serious violation of the student conduct code.  How about a kid who goes home to Arizona for christmas vacation and gets a DUI,  a criminal charge,but not related to the University.  Or a student is arrested for an alleged sexual assault....to use the issue which is generally at the center of the discussion.  There may be evidence which does not lead to criminal charges, but which is deemed, through the application of the student conduct discipline code and procedure, sufficient to lead to University discipline.  The interface between the police and the University on such cases is problematic as we saw with the case involving three basketball players.  These things, as you suggest, are never simple.  Gary Crum