I agree with your general assessment and that different schools, even of a kind, can have more or less school … spirit for lack of a better word. Cougs love being Cougs. That said, you may be underestimating the ability of a non-Greek kid to find his community there. I don’t think it’s Greek or commuter. We know plenty of kids who were happy there w/o the Greek system.
@coffee2022 answered the test question, and I think I understand. That said, if he winds up with really strong scores, especially in math, you might want to submit them. It might be a deciding factor. IDK.
Good luck. I’ll be interested to hear back from you what happens and what he ultimately decides to do.