If these data are accurate, then it does seem that you may be looking at a twice exceptional situation, where the giftedness and the disability are masking each other, which suggests that further evaluation would be warranted, either through the local public school (which, if he is attending his community school, appears to acknowledge that he has learning needs already, based on his history of receiving extra help), or through a private evaluator, such as the psych who did his IQ testing. Further evaluation might include academic achievement, executive functioning (attention, organization, planning, etc.), fine/gross motor, vision, etc.
What kind of academic needs has he displayed in the past? And was there any variation in his cognitive assessment results, or was everything right around the same range as his FSIQ? That might help us tailor suggestions.
