IME private schools pay quite a bit less salary than PS. I'm currently on the market, and from what I've seen, h-ere, starting for teachers w/a Master's in public school is anywhere from 45,000-50,000; and private school is 40,000 or so with parochial schools significantly less. Plus the private schools are not part of the state retirement system which is a huge, huge benefit. The big draw to private school is the working conditions (as you've discussed!)