In our case I think they just went ahead and entered the GAI because of the paper and it also said it in the report (that the GAI should be used because of discrepancies). DD was probably the only kid who had a WISC score. In your case, it sounds like they are giving the WISC IV to lots of kids? They probably don't want to calculate a GAI because then they would have to do it for everyone meaning more work. I would present it as something that SHOULD be done, though, for everyone who has a discrepancy between scores (and a GAI can be calculated), not just your DS. Of course, if his FSIQ qualifies him for services, then you wouldn't need to bother with any of that (unless you want to for the principle of the thing).
