Being expelled doesn't mean you don't have to go to school. It just means you have to go to school somewhere else. It means odds are new school, new friends, and a little bit of inconvenience and shame along with it. When someone screwed up when I was in school it usually caused you to have to spend a year or two either being homeschooled, at the alternative school, at the school in the local juv hall, or the next district over.
So yah, for most parents around here whose children get expelled, and I'm gonna go ahead and say that if the child is acting that way, the parents of that child, it means no more school, or very bad "home schooling", because the parents are just not involved.