Is your son handling those conflicts OK? Sometimes our kids are more affected by certain conflicts than NT kids; less able to "brush it off." I guess that is what I would use to decide if more needs to be done; I have been known to say to the school, "I don't care if it's what everyone has to deal with it, my one child CAN'T, and HE has an IEP so we do have to talk about it."
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Mom to an amazing young adult AS son, plus an also amazing non-AS daughter. Most likely part of the "Broader Autism Phenotype" (some traits).