I would try to bring the psych to the meeting if you can, and also would get a copy of the IAS manual if at all possible.
The other thing I'd do is to try to understand as much as you can about *why* his WISC showed such a large gap between FSIQ and GAI. I looked back through your previous posts and saw that your ds had a relatively low score on digit span and coding. If you have any info from the psych who did the testing that can give you some insight into why those subtest scores are low, it *might* give you insight into why your ds' scores on the school test were lower. For instance, my 2e ds had a relatively low score in coding due to fine motor issues. He scores low on timed tests - not because he doesn't know the answers, but because he can't write last enough to finish the test in the same amount of time a nt student can, so his scores look artificially low on timed tests.
Best wishes,
polarbear
