Yeah, that's what I was trying to get at before, the fact that it doesn't represent an accurate snapshot of society. In some ways, I guess MHS/Private Schools have that "groomed for success" sort of feel about them.
I went to a good local public school, the environment was friendly as well, and of course there was no bullying, but there were the occasional fights and stuff, but generally it was amicable as well, but it's a different environment because not so many people cared so much about success, there were heaps of people who didn't (which isn't a bad thing). But apart from that it was a much more diverse cohort then I guess what you would find at MHS or private schools. The cohort as well balanced, many different people from different backgrounds, people who were high achievers, people who were lower achievers, people who had very different aspirations (unlike at MHS, where you mention most people have similar aspirations).
In some ways I think that this difference is a good thing, it's more in tune with what society is like as a whole.
I think the "real world" exposure in a high school is going to be negligible between private/public when compared to the "real world" exposure in the home environment...
What do you mean by the home environment, could you expand?