Hi Kriston,
I don't know a lot about the IQ discrepancies, but I work in special ed. I know that, in my state scoring "too high" on IQ testing should not disqualify a child from receiving services. At first, I thought having an IEP wouldn't really matter in your situation because of the HSing, but if the school situation is changing, it may help IF you feel there is a need for an MFE. Our school psychologist explained to me that the biggest factor in determining a need for special ed. svcs. is - does the disability interfere with the child's learning.
He may not even need a formal evaluation if he's being HS and going to a GT school. You are more than capable of meeting his needs at home and the school is probably used to having children with varying abilities in different subjects and willing to accommodate his needs without an IEP.
