We had them, they were mandatory, and I hated them. They were always at the end of the day and you could only leave if you had the permission of your parents. If you drove away in your own damn car the vice-principal was waiting at the exit of the school with a stack of detention slips and to turn you around. I hated them and everything they stood for. I would only yell during them because my disdain for the underclassmen would not allow me to let them out yell our class. Otherwise I would only yell when it made no sense to. Our band was great though, so there was that at least.