Minors don't necessarily have the full array of rights that people of majority age have. Schools for a very long time operated in loco parentis -- essentially

Minors don't necessarily have the full array of rights that people of majority age have. Schools for a very long time operated in loco parentis -- essentially possessing the same ability to restrict a minor's actions as a parent would have. The doctrine of in loco parentis has been mostly dismantled since the 1960s, but not wholly.