Now, putting aside all the poking of the thread:
homeschool. seriously.
there are tons of schools online and in correspondence - Calvert for one is great. It is not that cheap but it is worth it. I also think correspondence schools first are better than online.
Don't let the kid be traumatized by organized school system.
Its not the school, it is the parents. Home school is not an option. He is 16 for one, and very intelligent, could educated his parents more than they could him.
His parents failed him, and just didn't care. He just turned 16, and it is a matter of time before he assaults one of his parents again and becomes the states problem. The last time the Cops had to take him to the psych ward they informed his parents they could emancipate him with due cause. I think the multiple times he has been documented attacking them will do.
The mom completely messed him up, I won't be surprised if he turns into a serial killer one day. I don't want to get into it, but both his brother and I figure he will be a serial killer or spend most of his life in a mental institution. It is quite sad, the kid is a genius.