Debbie,
I seem to remember that your son tested on the SB-5 previously. Is that correct?

Maybe you should have him tested on the WISC-IV while he is still near 7 years which I understand is the ideal age for testing.

His behavior sounds familiar to my son (at school) at the same age. Interestingly, his behavior was much easier at home than the reports I heard from the teachers. In his case, I think he realized that once he was done, he was free. At school, once done meant more of the same.

What did your DS think of the 4th grade test? Did he take it in the 4th grade classroom?