Well, it starts on the university campus with the campus police and administration as this is where the alleged sexual assault took place. They have an obligation to look into the allegations in the same fashion that Penn State had an obligation to investigate in the Jerry Sandusky case (not only the actions but the coverup). Local police will logically get involved as well as local and state District Attorney's.
"We have a situation on campuses across the country where a vindictive student can get a fellow student thrown out of school simply with creating a perception of guilt even after law enforcement finds no crime was committed."
We also have a situation on campuses across the country where entitled athletes feel they can get away with anything because they are part of the program. Should we disregard allegations by generalizing accusers as "vindictive students" or because Billy Bob, the states attorney wearing an FSU tie, says "nothing to see here, move along"?
That said, do you really believe, based on the published reports to date, that the investigation was followed through fully with no bias, influence by alumni/backers/the football team, conflicts of interest, etc.? Nothing smells here?