And eco - DS is the king of low-hanging fruit and obtuseness. Yesterday he wrote a curse word on the bathroom wall because he thought other kids would think it was funny. Bless the principal for understanding he did it out of isolation and loneliness - and for helping him get that this is NOT the right way to make friends. Now if I can just help her understand more about why he feels that way!
Oh gosh, we went through a horrible curse word thing at about that age. I have never been so mortified (nor have I ever tried so many useless interventions). OT but FWIW, the most compelling argument I ever used with DS about this was that even though the kids laugh, they will probably feel uncomfortable about it and tell their parents, who will then think he isn't a "nice" kid with "nice" parents.
Good luck in your meeting! This stuff is really hard to explain. I never even understood until recently that the PSI on WISC (V, anyhow) is essentially a test to see how quickly they perform "pencil and paper tasks." I think there is more to it than that, really, but the NP simplified it to that degree in her report.
As far as loneliness goes--ONE good friend can be a lifesaver. I hate the themes of loneliness and isolation you mention. Thank goodness your DS has you.