I always thought you should be able to take your grade on the final in lieu of your grade in the class.
Depending on the class I support this hardcore.
I tested out of health class in high school this way. End of freshman year a friend and I were given the textbook to study over the summer. He studied assiduously a few times a week for three months, I glanced at the book over breakfast the morning of the exam.
We both passed. We both had the necessary knowledge that we acquired at our own pacing.