If there's one thing that I learned by living in America is that the educational system is not about education. Punishments include sitting in one or two hours after school without being given any assignments, having your name written in the system for idiotic yet repetitive things, and then staying home for stuff that sometimes doesn't even directly relate to school. What American education IS about is grades, if you forbid a student from getting grades then you are forbidding your student from getting education in America, which completely contradicts the purpose of an actual school. Then they question why the world thinks they are mindless assholes.