Bad Teacher, Good Teacher, Great Teacher

Nobody has ever measured the harm done on children who have a bad, really bad, teacher. The younger the child, the more the harm, and parents are usually unaware of the enormous stress placed upon their son or daughter. A bad teacher is much like a bad priest or its equivalent, a preacher or minister, except that the first sees and interacts with this child five days a week. Just imagine being subject to scorn and ridicule for a whole school year; the other students, who miss nothing, quickly notice that their classmate is being harassed by their teacher. Whose side do they take? Of course, the guy or the lady who gives them grades, the adult in the room who can cause havoc at home with one phone call.