DS, 6.5yo, Year 2 in mainstream school. Y1 was fantastic, probably largely down to brilliant teacher, he was happy, learning loads both academically and socially. This year has been going downhill by the week. For the first time in his life, he is saying how much the noise stresses him out - both in the playground at lunchtime/playtime, and in the classroom.
I think part of it is the teacher, who doesn't seem to have anything in the way of discipline, so the class is more rowdy. She also doesn't really give a fuck about ds, eg gives me the "but they all do that" line on the one or two times I've spoken to her about difficulties. Has never actually met with us at all to discuss his statement (she didn't come to AR meeting or have any input), his IEP was last updated in March.
It has got to the point where he is crying at bedtime (tonight being the latest time) about not wanting to go. Said tonight that the only good bit about school is hometime
As per the all-too-familiar picture, he behaves impeccably at school, so anything I say is met with "but he's fine here" 
He has had ABA shadow one day a week who has left now, and his TA, who has had ABA training and come to all home team meetings, is also leaving at the end of term. No news on replacement yet.
My ideal would actually be moving schools, and getting ABA tutor back in to shadow him possibly part-time. But in the meantime, while we look at other options, I need to find some way of helping him cope, without necessarily using ear defenders (which he'll hate, and I'm not sure I'm happy about them either - would rather find ways of helping him deal with the noise rather than blocking it out).
I suspect part of it, as well as the normal chaotic loudness of primary age children shouting in the playground, is perhaps him not really understanding or keeping up with the language.
Sorry this is so long, thanks for reading if you've got this far.
Any suggestions please? I have never seen him so unhappy in his whole life, and I feel dreadful not being able to give him alternative options or coping strategies, and can't bear to think about him being so unhappy all day but coping with it on his own.