That's all fine and dandy by me...I have all the friends I need, thank you.
Make oversimplified generalizations at your own peril...
You are right that there are some good teachers. There are also some really evil teachers working along side the good ones.
The problem for parents and society at large is that it may not be worth continuing with an out-dated, self serving, humanist (amoral) institution that permits good and evil the “right” to hang out with other people’s children.
If parents had the freedom of vouchers, the good and the evil (parents and teachers) would segregate themselves from one another. That is the best we can hope for in rescuing future generations.