I'm at my wits end. DS12 just cannot seem to get through a day at school without getting multiple detentions. They are never for anything serious (and the school has a wider issue with behaviour and the fact that they give out detentions like smarties - school of 1000 and in one week they set 1200 detentions) mostly he gets them for making stupid noises in class, or for talking with his friends when he shouldn't, but it's causing a real issue.
His dad and I are trying to manage his behaviour and he has been grounded, had his Xbox, phone and anything taken away. That didn't work so we tried to reinforce good behaviour through taking him out for treats if he does well, doesn't get detentions etc but nothing works. His Dad and I are not together but do work as a team to support him, but nothing works. His dad thinks he is a lost cause and it is creating a bit of a rift.
What can I do