Just wanted to give you HUGS. It sounds like you need a full evaluation. I would look for a psychologist familiar with gifted kids. It sounds like the behavior problems could be steaming from being bored. My DD reacts horribly when bored. If he is working 3 grade levels above, then sitting there can be very hard. I hope others have more advice. Good luck.

DD6- DYS
Homeschooling on a remote island at the edge of the world.