That is another vector on the spectrum of decisions for why quality teachers choose to work at private schools. No one takes a job purely on salary - a decision like that is based on many things.

Isn’t it obvious that good teachers want to teach children with parents that want them to learn? And punish their children when they are disruptive? And the school can kick out bad kids?

The current vogue of reducing everything in education to the lowest common denominator - eliminating gifted programs, enabling disruptive kids to ruin classes, removing suspensions and expulsions - is exactly why private schools are growing. I don’t want education to optimize for the worst kids who won’t go to college and into intellectual pursuits anyway. I want to optimize education for the kids who will actually get value out of it.