How old is your ds? Does he have accommodations at school for his dysgraphia/ADHD/etc?
Do you think the WISC verbal scores are what you expected your ds' scores to be, or do they seem low relative to his other test scores? On his other WISC scores, his PRI is very high, his working memory is strong, and Processing Speed is average - which is very typical of kids with dysgraphia. At the very least, due to the spread in PRI vs Processing Speed, the school should be using a GAI in place of FSIQ on the WISC. That still might not bring his overall WISC score up enough to qualify, but it would certainly bring it up at least a bit.
His other scores all seem to be strong too - definitely not average, so I'm guessing by "average" you were referring specifically to the WISC scores? Can you talk directly to the person who administered the WISC and ask if he/she noted anything during the Verbal part that might be significant, and also ask them to calculate GAI for you?
Have you tried to appeal the "no" decision? Who gave you the official "no" - was it someone at your ds' school, or someone who is associated with the district's gifted program? I would think you have a lot of strong evidence to use in advocating for your ds.
Best wishes,
polarbear
ps - does your ds have a teacher who will support you in advocating to place your ds in the gifted program?
