Assuming he doesn't get surgery are you thinking the main thing that will change is that now he has a label he can use to legitimize for family members or other skeptics why he's having trouble? Or, are you thinking there is some kind of concrete difference that will occur in his level of functioning?
If you need to have his math level tested he's certainly old enough to take the SAT or ACT. The ACT can be taken without writing so all he'd have to do is bubble. If he's really a the point where he can't bubble he should be in physical and occupational therapy.
