Handwriting: yes, filling out forms, etc, are necessary, but also doing math is really difficult to do with any AT tools out there. Imagine 4 equations and 4 unknowns, something he was just asked to do. It took the front and back of a page, and he made an error someplace (couldn't read his writing).
But fundamentally, I fail to see why no one is willing to even try to teach him. I understand moving to AT when interventions are deemed to have taken him as far as they can (like spelling, in his case), but no one seems to have ever been willing to even see if the source of the problem is lack of educational opportunity (skipped first grade) or dysgraphia.
