<p>yourworld: Some of people on CC probably go to good high schools. There are some really horrible high schools where it is very difficult to learn enough in a class to do well on the SAT's or AP exams. Calling a class an AP class doesn't make it one. I'm speaking as a parent, and my S basically took at least a third of his classes on a self-study basis with my help. It is a little discouraging on CC which some of the people put down other people for not doing well on AP exams. It isn't a level playing field.</p>