Not sure this is helpful, but can you opt out of that unit? When I was in high school, we used to be able to opt out of a specific sport if we didn't want to participate. We would have to walk the track instead, which is boring, but we didn't have to do that particular sport. I think there may have been a limit on how many sports you wanted to opt out of but I honestly can't remember. Can you talk to your school counselor about it?