Thanks ukmum, I don't have specific concerns related to digit span right now. But My son's handwriting is just average though.

Thanks Grinity. We live in Chicago. The reason I did this private WISC testing is that my son does not have friends in school. It seems that he has below-average ability to make friends. Other than this, he is doing well in school even though he says he learns little from school. He basically reads a lot himself all the time and has a lot of math work from home. As part of the WISC test, he also got scores on WIAT-II: Word Reading 117 and Math Reasoning 151.

Having read the forum for a few days now, would the discrepancy between VCI/PRI and WMI/PSD become some kind of "bottleneck"? It also seems making friends is not easy for some gifted children, right?

We are also thinking of looking for a school where they may have special program for gifted children.