Mmm... are you really saying that your DS, at 12 (and without ASD, right?) did not understand that the teacher would be hurt by his writing this? If my 8yo wrote that - in fact, if he'd written it two years ago - it would mean he was angry with her and was showing it inappropriately. I wouldn't be tackling it by explaining why the teacher was hurt, I'd be explaining why this wasn't a good way to get things improved.

I think it's important to understand which it is - lack of awareness of the potential offence, or deliberate offence, with lack of awareness of the consequences of offending someone, perhaps. The two need different reactions.

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