Essy8 – As someone who is both a parent and in chinuch, I resent your implication that only teachers, and not “backseat ones”, can give a meaningful opinion on the matter.
Teachers have the advantage of dealing with a wide variety of children, and the classroom setting is different than other chinuch situations. Granted. However, as parents, we are all mechanchim, and out thoughts on chinuch matter very much. Add to that the fact that chinuch is an area where common sense is more of a factor than learned skills, and there is no reason to assume you’re random rebbe has a better grasp of chinuch than your random (thinking) parent.