I'd say. Did they give you a percentile ranking? I think that full scale score puts him in the 99.6 or 99.7 percentile ranking. Pretty much scored better than 99.6% of the kids in the norming sample.. Very smart child.
Also, it's more difficult to score on the WISC IV than the previous WISC test. They sampled a gifted group of kids that tested on the previous test and the kids scored about 3-10 points lower on the new test.
Plus both the VCI and PRI are uniformly high. That's also not common. So, he should be equally talented in language arts as well as math.
If the achievement scores for Broad Reading and Broad Math were 153, that's also very high. Could be that the IQ test is a bit of an underestimate, but it's really hard to tell.
Good luck planning for his education and I hope the grade skip works out!
My girls love taking the IQ and achievment tests, well, DD9 loves it more than DD6 anyway. If that's the case with your son, it wouldn't be unreasonable to test again later.
I think Dottie might say that more data is better, but I don't want to speak for her. I've personally found that seeing a pattern of real high scores over the last two years has convinced me about my own daugter's situation.
Welcome!
Neato