[Jensson]

That depends on how smart you are. If you are relatively smart for the level you are at then you are fine without homework, otherwise you need it. Lots of people can learn well without homework in middle school, fewer can in high school and very few can at college.

So homework is important at all stages of education, just for different people. For you that happened at college. For someone else it might have been very important in middle school to understand percent, without that work they would have been much worse off in life.