My ex is badmouthing me to our kids and idk what to do
This is fresh and I'm still angry so forgive me if this is rant-y. My 9-year-old came back from his mom's place and casually mentioned she said I 'don't care about his education' because I let him take two electives he wanted instead of the honors track. Context: I sat with him, looked at what he's interested in, and thought enrichment in areas he cares about matters more than forcing advanced classes. My ex is big on achievement and pushing hard. Now my kid is asking me why I don't care about him doing well.
I've tried not to talk negatively about her parenting with him, even when I disagree. But this feels intentional and harmful. How do I address this without pulling him into the middle or going off on her?
That's infuriating. She's literally poisoning his view of you to make herself feel better about whatever. Did you correct him directly or are you trying to figure out how to handle it?