My son started a new school yesterday and the night before I gave him a bath no marks dressed him the morning of and no marks... Well yesterday at my Dr appointment my son pulled his sleeve down and says mom look owy... And he shows me the dark red marks on him... My husband picked him up early and he said the teachers were carrying him by his arms and now my son has these bruises all over his arms... Whether it was a kid doing it or a teacher being to rough idk what do I do?

***Update***

My son's teacher emailed me five minutes after posting this informing me that my son was mouthing (acting like he was biting himself but no teeth marks...). And scratching himself... I have never seen this behavior and my son bites his nails so he doesn't have the ability to scratch himself... I called the school and it was reported to principal but i have a feeling they will make this out to be my son's fault... A self harm sort of thing.