Me and a couple of people would go to the bathroom during lunch time to smoke weed at school... but I got expelled from that school.
We always used to drink beer in the box of a friend's pickup truck during lunch. And pick on people... We weren't that nice back then, really.
I usually don't smoke during or before school, or even until all my homework is done. I hope to get into UC Berkley, then I can toke it up all the time.