If all you want is for your son not to be subjected to the '2+2' stuff, perhaps you might consider pulling him out of school and not teaching him anything for a few years. He sounds like a self directed learner, so you can assist him if you want to, but there is a case to be made for just getting him out of that situation and not worrying about how much or what he learns for a while. You might want to read up on the philosophy of Unschooling, but I'm suggesting that you take an even lower key approach than that, IF all you really want is to stop the harm from being done.
I disagree with this advice. Pull out your son if you think it is best, but don't avoid educating him. There have been many discussions on this forum of curricula parents can use on their own.
