On the iPhone so this will be brief... I'll follow up more later. What about his grandmother? She's a third grade teacher. I can't recall if the references had to be non-family. She's observed him and often would comment that she wished her students did 'X' as well as DS.

DS tends to blend in with others in group settings. And if he's not interest in something you wouldn't really notice him. Which is a lot of the time during the school year.

Humor noted smile

JB