Hi Chris4! My personal experience is that ADHD can have a significant effect on WISC. My son's FSIQ was high-average before ADHD treatment. I got him treated, waited the 2 years, had him retake the WISC and he had dramatically higher results. Plenty high enough to get him the challenge and accomodations he needed in school.
Continue to advocate! Always. You may have to change your goals and strategies, but you are your child's advocate. He needs you even if he doesn't qualify for your school's gifted program - or, perhaps, especially if he doesn't qualify. Focus on his needs rather than numbers, re-evaluate the situation frequently, and do your best. <3
