What is your normal method of operation if there is a dispute?
There isn't one. Nothing has really escalated to this level. To the extent I complain, I just threaten to go to court, but that's not common.
Do you have a therapist, parent coordinator, or do you handle between your selves?
No, but I probably should have one.
I would at least document by writing down the dates, and any proof of poor school behaviour after a sleepless visit with mom. Will the teacher validate your concerns?
The thing is that the misbehavior is more at home than school. I can't really ask the teacher to validate something at home.
I will bring up the idea of a go-between for disputes though, and start working out the options.