The school's position is ridiculous, the immaturity is exacerbated by not being with more advanced peers.
This is SOOOO true. DS is a completely different child, depending on who he's around. When he's out in East Texas with a family member's boy, who is very calm and mature for his age, they pretty much NEVER get into trouble, never get out of control, there are no meltdowns, nothing. He's practically indistinguishable from a "regular" kid. Put him in the YMCA daycamp and we are back to acting inappropriately most of the day, meltdowns, running off, screaming, etc. Of course, DS's situation is exacerbated by his PDD-NOS & anxiety, but still.
