To push kids toward more than one school. Push them toward multiple good schools that he can be successful at. Obviously hindsight is 20/20. I think we get too caught up with what school we go to and not enough focus is on the career.
I understand there are other factors like friends, religion, etc.... But the other options he has will be just as good as BYU IMO... And he can always reapply later if he so desires.