You have some good points and I admit that what I wrote came mostly from a gut reaction. However there are a lot of studies showing that there are few benefits

You have some good points and I admit that what I wrote came mostly from a gut reaction. However there are a lot of studies showing that there are few benefits for more well-off kids to avoid social mixing, while the damage inflicted to those who can't afford private schools and are deprived of interaction with other social classes is great. I personally don't believe in solutions like charity and volunteering to make a society more egalitarian and fair. I'm thinking specifically at the impact of this type of philosophy on American society vs advanced socialdemocracies like Scandinavian countries. If you realize you have a cultural or economic advantage I think you should really put it to use by sending your kid to the same school as everybody else and improving it passively by their sole presence, and actively by making your local public school as good as possible for everyone else.