Mia,
At the beginning of college some of the introductory courses are very much like high school. But, college classes overall should not be like this and these are not good choices for dual enrollment right now. If you are aiming at some place like MIT the introductory courses there will not be like high school. If you end up going to a less well ranked university you may be able to test or place out of many of these introductory courses so again you won't be stuck with more of this. If you are at a university with a graduate program you may be able to take graduate classes while in college.
My suggestion: Ask to meet the director of undergraduate studies in the physics department at the college where you are taking classes. Bring in the physics stuff you've been working on and ask what they would suggest. Tell them you are interested any suggestions for how you can do physics with other people - classes, talks, visiting a lab, working with a mentor. You could also bring something you've been reading and ask for suggestions of what to work on next. The best part of college for you will be getting with people who share your interest. It doesn't matter what school you are at, there are brilliant people in the physics department. That's where you need to be.
I would stop taking pointless high school quality college classes. See what you can get through the physics department. Maybe you will like it enough that you want to wait another year and establish your maturity so you will have greater college choices. I understand the concern that a highly competitive school like MIT may be a stressor with Asperger's. If that isn't the cards for you I would suggest looking at research universities with strong physics departments.
Finally, I wanted to say I'm impressed you found this board and are asking for help. Your life shouldn't be about boredom. Don't accept the suggestion that is what life is about. A good academic fit is the opposite of that. College is a time when you will be able to connect with intellectual peers who share your interests. You will be intellectually engaged. It is unfortunate that this first step into college wasn't a good one, but keep trying because you will find it.
