One other thought:
Those visual scores stike me as interesting, although I never noticed it before. He's generally scoring in the 90th percentiles and above (even at 99.9% for visual discrimination). Does this suggest that he's a visual learner rather than a sequential one and that he might be having all the educational problems that can come with that in a standard school setting? Also, would his much lower visual figure ground score indicate something? I'm thinking maybe along the lines of this might be why he immediately decides he can't do something when given an information-cluttered test or homework assignment or why when he's reading chapter books outloud that it stresses him out and he makes so many mistakes.
