Holdbacks are always DUMB:
If it is for academics, kid is dumb.
If it is for athletics, patents are dumb and have misplaced the role if athletics.
Financially it is dumb, put your 15 k tuition in a 529 in 8 th grade and you get more than your lax scholarship.
College coaches would love ALL their recruits to do it- they are FIRED if they do not win - period.
Private schools also LOVE this as greatest fundraiser of all time.
How'd you like to sit in the same classes again for no reason at all.