I never actually fell asleep in high school, but after some long nights stay up until 3-4 am, I would often put my head down on my desk and shut my eyes. The teachers would then ask questions and call on me by name, and I'd pop right up and answer them. I still paid attention. :)
I did fall asleep once in college, though, in a Survey of Music class. Little or no sleep the night before + dimly lit room + classical music = sleep. When I woke up, I knew where I was, but for some reason I didn't recognize anyone. There was a different professor on stage, and the slides on the projector seemed to have nothing to do with what we were studying. It took me several minutes to realize that it was ONE-thirty pm, not TWELVE-thirty pm, and a new class had started in the same room.







