You’re right, public school

[an]

You’re right, public school teachers does get paid a lot more than private school teachers:

http://nces.ed.gov/fastfacts/display.asp?id=55

yet, private school class size is smaller and private school on average tend to perform better than public school. With the advantage economy of scale for public school, we should be able to afford to pay more for public school and still spend the same per student and have similar class size. Yet, we’re not.