In our school, we have a mandatory study hall, which is held in the Auditorium for the last two blocks of the day. They're the bane of out existence - almost every day I walk in after school to find something damaged, broken, or defaced. They especially seem to like playing with the aisle light strips, as well as rocking the chairs back and forth to make them squeak. Their use of the auditorium, of course, has led to many pranks - intentional and unintentional - on them. So I'm wondering, do you have study hall in your auditorium, do they damage it, and have you ever played an amusing but harmless prank on study hall? As far as pranks, we've had a few incidents, usually involving the house lights. I've left the DMX cables unplugged accidentally, and former techs have programmed effects cues (such as house light chases) to occur at random times. Also amusing is setting the downfade time to 30 minutes, and hitting the switch on the way out.