I don't think that our former WIAT achievement scores are high enough to qualify for YS due to math and MAP scores don't count. We aren't signed up for NUMATS Explore and I think the deadline for that is Jan 16-- probably not enough time to apply for extended time.
So go the portfolio route - it sounds like your examples are just right. Send what you have from the MAP and the other achievement tests, it won't count against him, it will just complete the picture of a very unusually bright boy with very unusually difficult challenges. Sign up for the explore just to see, eventually it will be good to get extended time, but it's fine to take it for a baseline now.
I'll bet that now that your son is in a better place, his handmaiden scores would be much higher if he was tested today (10 or 20 points can make a big difference in his daily life) and I'll bet they are less of an impediment than they would have been then. Ok, he'll probably never be a speedy kid, but once he finds his nice steady rhythm I'll bet his achievement will start to show improvement.
It sounds like your tester's summary is actually quite good. Most testers won't give super specific academic suggestions or know the local schools particularly well, they only know when they see a kid who is far from average - really really far in your case. 155 GAI is 2/3 of a standard deviation over DYS cut offs - that's highly unusual.
(Do you want us to explain more about 'standard deviations' or any particular part of the test? Also, try searching the terms WM, working memory and processing speed. One of the reasons parents end up here instead of being able to 'let the schools handle it' is if the child has bottlenecks, that is, large discrepancies that aren't so bad as to drag performance down below average, but are still strong enough to make a child miserable in an ordinary school setting.)
Smiles,
Grinity
