DS2 (age 11) has always had problems. When very young he was such hard work and I was pretty sure he'd turn out to be autistic or something similar? I took him for CO a few times and that worked a treat. His social skills improved and he was a pleasure. Had a few hiccups when younger but been ok. He was usually well behaved but had a few quirks, one being a button phobia. He still has this and won't eat if he can see them.
Lately he's been cheeky and swearing more. Even used the C word a few times towards his older brother 
He went into year 6 in September and seemed happier at school, he's the oldest now. But tbh he's just got cocky. Tonight his teacher stopped me for a chat. He'd been doodling in class rather than listening. Also looking at some cards when he shouldn't and when told to report to his teacher he pretended to go and told TA he had been. He does lie a fair bit at home and doesn't seem to think there's anything wrong with that?
I'm not sure what to do? Maybe he could do with some professional help? I think I'll have a meeting with his teacher to start with? I told exdh but tbh he isn't very helpful. He's far too easy going. He said he'll have a chat 
Dp is great although he's getting really fed up now.
Has anyone else experienced anything similar and found something to help?