There are numerous threads on here from me about my DS (10) and how his behaviour at home is breaking us as a family.
He's recently gone to stay with his father after I reached serious breaking point.
He went for 3 days before coming home and he's been back a week.
Every day during the week I've been called into school,
He's been asked not to return to his after school fitness club due to a total refusal to engage and participate.
He's on a very, very last warning with his weekly school swimming lesson due to him looking under changing room doors whilst changing after the lesson. (He claims he didn't do this but has a history of being a compulsive liar so I'm afraid his teachers don't believe him)
He's had a 3 week project to do at home, it's due in tomorrow. He's so far refused to do it then today after a lot of arguing has produced something that looks like it was done by a toddler in a spare 5 minutes. 
Scribbles, no punctuation, no ruler, grubby finger marks all over it, scrawled in crayon ffs!
He's year 5 and this really isn't going to go down well at school tomorrow, I can see him being kept in at playtime until it's competed.
But what do I do now? Do I let him take it in and face the consequences (he's refusing to into blank to redo it) or do I go up to his room where he is currently and baby step him through a re do, which is what he wants.
He's chronically lazy with writing but even this is low for him in terms of school, he's always been average across the academic board with a slightly higher than average level in maths, he's always been so keen to please his teachers.
It's like he's gone into year 5, turned 10 and suddenly he doesn't give a toss about anything or anyone. He acts like he's above any rules and I'm at loss as to what to do.
There's nothing more to take away as a punishment for his behaviour, there's no more rewards to offer, there's no more people I can contact for support, I've come up against a brick wall at every point.
We're waiting on the slim chance of a psychologist seeing him but in the mean time have been advised by his hospital team not to A&E a big deal of anything and basically as long as he's not hurting anyone else, let him do what he wants when he wants. 
I have 2 other children and one on the way, this isn't really possible.
I'm sick of sobbing in front of his teachers,
I'm sick if him ruling me,
I'm sick of not knowing where to turn or what to do next.
His dad (my exp) is due soon to bring back DS2 and I'm sat here in tears again.
DP doesn't know how to help or what to do.
I don't know if it's my hormones or what but I cannot cope anymore, I don't know how to proceed with him.