The primary role of HS is to educate not play sports. HS sport is a privilege and the only requirements are to keep your nose clean and get decent grades. If a player in any sport, no matter how good, cannot maintain at least a C+ avg they should not be allowed to play. That time would be better spent in tutoring or teaching the kid a vocational skill. Pushing a kid along academically(D to D+ avg) because he has some semblance of athletic talent is doing him/her a great disservice for their future.