Can I enlist/get in to the DEP for the Marines while still in 11th grade?

Im in an idependent study type of high school where I only have to go to cl about three times per week at the max/min is once per week. seeing how I have so much time on my hands I would love to be enlisted into the DEP which would help me more on my physical fitness, as I am to lazy to get off my a** and work out by my self, which doesn't give me much confidence/motivation. I would VERY much appreciate an answer to my question and some opinions/information.