Thank you again for all the replies! It's nice to have a place to discuss this. I am on some local parenting boards, but I do not feel comfortable bringing up this topic. I am uncomfortable talking about a "gifted" kid. Not sure if that makes sense, but it's just really uncomfortable (embarrassing?) for me.
Despite being at a gifted school, I do not believe the teacher "gets" my son. Maybe next year will be better. He's actually a really sweet kid, and his teacher appreciates this. But she said he is just too silly.
I have talked to him about the issue, and explained that he can't be disruptive so as to deprive other kids of their education. But it is difficult to parent remotely, as someone posted above. And another problem is that...he *is* funny, and I have trouble not laughing at some of the things he has done or said. Bad mom ;-)
Again, I really do appreciate the feedback and support. I think I will see what happens with the NNAT. If it is consistent with the OLSAT, then I might consider IQ testing in order to determine if some type of acceleration is needed.
Thank you all!