A Second Chance on Tests?

I feel for you. If I were you, I would want what they were working on daily, his book too. Then go to Khan Academy and watch the video there on the topic, with your son. Depending on his math book, the methods may be different, but if he understands it, and can get the right answer, that is what should count. www.khanacademy.com You can also do practice problems there as well. He may even be able to do this largely on his own. If he is still having issues, let the tutor know what they are, she may have a different way to do things that makes more sense to him.

I would also be very annoyed with the teacher. Ask about do overs. It can't hurt, especially if he is not getting the help he needs in class.