i think his mother has said he was "intellectually below normal" so i doubt he is high functioning. I'm also wondering if he might have a genetic disorder due to his facial features and head shape? (im not trying to be rude, theres just many disorders that also impact the bones in the face) Personally I cant see either how a facility for non-disabled boys with behavioral problems is a good place for this boy but I don't know know his family or his medical history so I will try not to cast any judgement.
I hope the facility is held accountable for Nathan's escape

im guessing the facility wasn't set up for the care and consistent supervision that Nathan probably needed, though.