Title IX vs police investigation

So if the alleged act were to occur on campus and the campus has a police department, the campus police (as a representative of the school) would make the decision on whether to make this a Title IX or criminal investigation? What would factor into that decision - is there an advantage of 1 or the other approach from a school’s perspective? Different process with lower burden of proof for Title IX so for “he said she said” cases that would typically be preferable? Would it raise any red flags if a school had a large number of Title IX cases to investigate, hence making it preferable for them to take the criminal route?

From a victim’s standpoint, is one or the other approach preferable? Do they have any input in which way it goes?

@HarvestMoon1 both paths could be pursued in parallel? I would assume an act off campus would not qualify for Title IX?