I've known a lot of teachers and not many are honest about grades, and more than a few are abusive; very abusive. I'm retiring and that's large part of it, and I tell my own children to teach their kids at home if they care for them.
There are too many teachers who shouldn't be out there; most in fact, but as with the "Barney's", when the applications are turned in the administration has to go through sometimes hundreds of applicants to find their friends and family.