Ahhh, and by lack of supervision, I mean extremely wealthy families who weren't exactly keeping tabs on their kids (not insinuating all wealthy families are like this, so please don't go there), who had access to excessive (think celebrity families) amounts of money, freedom, internet, etc. I was in the first generation to grow up with home internet and pagers/cell phones, and our parents didn't have a clue. So these were the kids I went to school with that were some of the first from our sheltered little elementary school to get involved with drugs at the middle school level. Also, the vast majority of my friends who went to boarding school were drinking excessively and/or smoking by high school.
It was an interesting culture.