this was my worst subject in HS and i got an A in the class, very easy, fun to attend, good explanations. The tests only consist of 20 questions. They come from the practice test and online quiz for that chapter, in additon to some in the book. There is really no reason you should fail this class. HE gives out a decient amout of homework. He expects you to learn on your own too. If you read the chapter, do some practice problems, go to lectures, you will do Awesome in the class.