Yeah, it's a tiny private school with some pretty serious privilege issues. It's 90% white, 85% male, etc., probably due to a combination of the surrounding area, the high tuition, and the stated mission (school for the gifted - not that white males tend to be more gifted, but I wouldn't be surprised if white males were more often designated gifted).
Ah, we have a high school like that back home and I recently worked about a mile away from Phillips Academy. Talk about privileged. But you know, I'd like to think that while they're not exactly melting pots, that places like those set a person up to go almost wherever they would like, and open up a lot more doors down the road. I'd think a lot of it has to do with socioeconomic standing as well.