I'm thinking I would like to ask his teacher if it is possible for him to take the MAP test this spring when the 2nd graders do, since it is not something 1st graders take. Maybe then I can get a better sense (as can the school) of his math level. But then, what to do with the information?
Great idea.
We do not want him to skip a grade, although his sister did it with no problem and she wasn't this far ahead in math at this age. He seems like he's in the right grade as far as everything non-academic goes. So, if it were you, should the MAP test show he is ready for 3rd grade work as we suspect, would you: 1) push for a subject acceleration for next year in math, 2) wait and see if the math ability groups will meet his needs, or 3) just continue with the afterschool activities since, while he's not learning at school, he does like school at this point?
Question - will there be Math ability groups in 3rd grade? If that's the case, then the MAP test would be great to compare him to other 3rd graders so maybe he can get placed in a class where he will learn something.
I would recomend to take the test and see what the results are, and then you'll know more about what to ask for.
BTW - Your son's FSIQ is MG, but what about the Subtests? Are many of them like his sister's? How does he look when you take out th working memory and processing speed subtests? Maybe the information to support that he is 'like his sister' is inside the test?
Best Wishes,
Grinity