Would it be correct to say that the T20 in this question is one of MIT, Chicago, JHU, Caltech, or WUStL, since these are the USNWR T20 national universities that are not in NCAA D1 for sports? (But then the OP could attend one of these and play the sport at the NCAA D3 level, where s/he and his/her NCAA D1-level athletic skill would be welcomed as a walk-on if not recruited as such.)