I loved this film as a kid!!! Ms Trunchball used to scare the heck out of me!
I always remember the scene when that fat kid is made to eat a big chocolate cake infront of the entire school (because has been stealing cake). And at the end, Ms Trunchball smashes the glass plate over his head when he finishes eating it, due to the entire school cheering him on. And the horror-stricken look on the school children when she does that...