Not at all, @doschicos. I have plenty of friends still at Sidwell, and sent my own kids to a fairly similar school. It is just a fact of life that such schools do attract disproportionately wealthy and entitled parents and their offspring. That may be offset by many good things offered there, but is nevertheless an important trait about the school. Of course it is diverse. DC is the site of hundreds of embassies, and plenty of diplomatic kids there.