Can one appeal a waitlist decision?

Totally confused alum here… DS (1520 SAT, Eagle Scout, 106 Weighted GPA, decent ECs) was waitlisted at University Park. His stats had him “in the range” for Schreyer, so he applied to the Honors College as well. I am really shocked, quite frankly (we are out of state). I am wondering if it is even worth trying to appeal, given that PSU receives 100,000 applicants a year. Anyone with any experience in this area?