>There's a certain prestige attached to some very famous, expensive private schools (called public schools in England alone, never quite worked out why). The number of Eton graduates running the country comes up a lot, for example.
That exists here in America too. Harvard and Yale account for quite a lot of our top executive and judicial branch posts. Most famously, every one of the 9 members of the Supreme Court is either from Harvard Law School or Yale Law School. In their own way, Harvard and Yale are America's Eton - where future leaders go to hobnob with other future leaders.