The number of student athletes pales in comparison the general student population. Student athletes must travel, so you have meals. lodging and transporation. There are probably other costs I'm not thinking of at the moment.
Right. Isn't a study like this just stating the obvious? Must be federally funded.
On the whole, it can't cost a penny more to
educate an athlete and counting money spent elsewhere is illogical and self-serving for the "researcher". Now, where the money to educate said athlete comes from - different question.
I'll bet universities spend more on drama majors, too, what with the sets, the costumes, lighting, make-up, posters, ushers, etc. I think we should start cutting back on that stuff!