DS is in Year 4 and is generally well-behaved (none of his previous teachers have ever raised any issues with me). He has a very strong sense of 'right and wrong' and injustice and is very quick to tell others when they are disobeying the rules (and yes, I get that it is very annoying!) His sibling, otoh, is a constant 'rule-bender', I often wonder how they are even related!
Anyway, on Friday, I got a message from his teacher saying that another child had reported DS for doing something wrong. She said she had spoken to DS who totally denied it but other children witnessed it but as it happened just before home time she hadn't had a chance to deal with it so would pick it up on Monday but could I speak to him about it over the weekend.
In the meantime, one of his friends happened to mention to me (unprompted) that DS had not done what had he had been accused of.
Anyway, I spoke to DS and he was adamant that he had not done it and that this boy was always picking on him to get him into trouble and he got very upset at the injustice of it all. I do actually believe him as he has never shown any inclination at home to behave in that way - even when his sibling is pushing every single button in his body and he is as angry as can be.
I messaged the teacher and told her the above - she said that she would speak to the other boy on Monday and let me know.
Went to pick DS up from school and the teacher didn't approach me so I assumed it had been dealt with. I spoke to DS about it and he said that the teacher had persuaded him to admit that he 'may have done it' by saying that if he did, they could put it behind them and move on otherwise if he was still adamant he didn't do it, she would have to speak to all the other children and he could potentially end up in front of the HT. So basically, and by his own admission, DS just gave in and couldn't be bothered continuing to deny it to save him and everyone else a lot of hassle. He is still adamant that he didn't say it but thinks he did the 'right thing'.
The teacher sent me a message later on yesterday pretty much saying the same thing that DS had said.
I do get what DS did as I am one for the path of least resistance and remember admitting to something I hadn't done at school just to stop all the difficult conversations with the teacher so I can't blame him. I don't really want to get into a back and forth situation with the teacher either as it's not going to achieve anything but on the other hand, I am a bit miffed that she pretty much pressganged him into admitting it 
Do I just leave it now and move on for DS's sake?