This a case local to me although I will say I am not personal involved in any way. Basically for anyone not wanting to click on the link a mum has sent her autistic son of five years old into school with a recording device in his bag. This was after a full year of sending him in crying and hysterical every day for no apparent reason and she had asked the teacher many times if any thing was wrong etc. The video she has posted is the answer as to why her sons behaviour had changed do drastically but for anyone a little sensitive it is maybe a good idea not to listen to the recording as it is quite shocking!
www.facebook.com/Justice-for-Aodhán-265764880565168/?fref=ts
You need to read the mums first post for context then scroll down past a few posts to listen to the actual recording