Emo@ that's where you'r wrong you can always go back and do some of it over it's the lower grades you cant anything from 11th and up is well im guessing free game (not really free because usually you do have to pay)
You can't retake high school. You have to get a GED. You can't retake any grade because the school has to give a certain amount of cash to provide for each student. At least I think that's how it goes. I know you have to get a GED though.