because a private school would not have confined my friend's child to special education because she spoke Spanish in class one day to a friend.
Perhaps rich people are getting the result they believe they are supposed to receive? As in, their behavior is modified in minor ways they do not perceive but all towards the goal of increasing the success of the children they enroll?
It really comes down to parents. Children are not autonomous for the early formative years and how the parents treat them, from setting their morals and encouraging good behavior sets the course for most of their life barring abrupt unforeseen external forces.
I have only one issue with private schools, I do not believe any politician should be allowed to send their children to one.