Not only in United States but everywhere in the world. If you are not rich enough to send your children to a private school, will you sit down and allow your kids to roam around the streets when others are in school. Whatever vices in private schools are also in public schools, and I don't see any much difference in both schools. Some poor people have brilliant children; they attend public schools to learn and come out in flying color. If you are privilege to go to a private school doesn't mean that you are better than those who attended public schools.