He gets social skills training/classes as part of his IEP. I do like the idea of a mentor, and I will approach his water polo coach about it. Perhaps there is a patient senior on the team who can take him under his wing, so to speak.
Alan, I understand your point about the CPS approach. I suppose my backwards attempt at that was when I asked him why he chose to hang out by the net instead of going off and getting involved in the activity the other group of boys were doing. Though I could see him processing that and a realization that came with that hindsight, I think I'll need to bring that up again in a more "collaborative" tone and talk about it further to reinforce the concept.
As for the Autism Spectrum Disorders (ASD) traits, it was suggested as a possibility by the school therapist in elementary school, but not enough elements were present apparently based on the testing they did. And his current psychiatrist doesn't think this is the issue either. He thinks it's a manifestation of the ADHD, such as the inability to pick up on body language and problems with pragmatics, etc. The neuropsychologist felt similarly about him.
At any rate, we definitely have our work cut out this year.
School starts in one week, so I guess it's time I got busy in my annual letter-to-the-teacher(s).