Can't speak for college, but this is definitely not the case in year 11. Most people are high at school all the time (one of my mock exams were fun as a result).By the looks of things when I'm out and about, 'getting hench' is the new drugs these days. Drugs are bad. Large body and peanut head is the 'in' thing nowadays.
This may come as a suprise to some people though, but I'm a teenager who doesn't even drink, let alone drugs. Most people don't believe me