Who needs prerequisite classes that are in no way related to anything either practical or interesting to the student?
Who needs a teacher who literally just passes out worksheets and then sits there doing nothing for the entire period?
Who needs busywork that was never fully explained?
Personally, I don't use study sites, but that's more because high school is easy than anything else. Maybe I will in college; not everyone wants to learn everything and sometimes you just need a decent grade in a class because that's how the education system's set up.