I think that it's now accident that children are sorted into 'Grades' like 'eggs.' It's not our schools' fault that they mirror our larger society that sorts and labels everyone in it's path. You can try to explain this to mistaken perspective to DS and see if it sticks.

But my Main, main worry, Tracy-kins, is that someone in that particular classroom is telling him that he isn't 'good enough' to be with the other kids. Someone like a teacher or a bully.
Again - I urge you not to 'just wait this year out.' I'm getting a bad vibe from your discriptions of your son's school setting.

Love and More Love,
Grinity

Coaching available, at SchoolSuccessSolutions.com