Your parents know that they are legally responsible for your actions until you are 18 and are requiring you do as they say. That is your job for the next 11 months, to obey their rules. Even though your heart is not in it you need to provide the minimum of JWing while home. Sucks I know but its how it is. You can occupy yourself with games on the pad you use and kill the time. Service? Just let it roll and do a little.
Make friends at school and do involve a counselor so long as they will respect your privacy. You may not need a verbal advocate yet, just a listening ear.
All the best.