Children also are not allowed to vote or drive and it's not because they are short. Kids need reasonable rules and structure, preferably made by thoughtful people. That is not prison. If they aren't in school, then they are at home following their parents' rules. These may be very normal or very strange rules. Is that prison? Schools are the lesser of two evils. When they fail, as they have in this video, everyone pays the price. The kids end up in a far worse prison, that of ignorance.