As cat suggested, I would definately send all the kids teachers a e-mail, thanking them for their time, and lightly touching the fact that you are D'd, but equally involved in all issues where the kids a concerned. I did it, and it has worked well now for the second year. Hell, I'm actually the primary contact it seems as everytim they try to get a hold of XW, all they get is her voice mail and no call back. But, hey, that only works in my favor as it paints Xw in her own poor self-portrait. Sure, you still miss out on little things here and there sent home from time to time, but they will inform you of any 'major concerns' and the like. And, perhaps at the mext meeting, they'll be a little more attentive to address both parents.
Now, as far the JPA. Wow, don't we all have too many of the same thigns going on in our situations? I finally had enough of XW's antics and countless violations to the JPA. I did my research and came to find that it can be terminated at any time and the matter brought back to trial, pretty much right where we left off.
So, I wrote a nice 2 page letter, free of emotion and personal acusation, took some excerpts from the JPA pertaining to the joint parenting philosophy, and then the areas of complaint I had that are in vioaltion of the agreement. And that in itself is step one of the prescribed resolution process.
I will say, it got her attention.
I'm sure you know, the kids are going are going to sugar up their stories some (on both parents). I know especially where OM is concerned it can be hard to not react immediately to things you may find offensive. I just try and verify their story a few times for inconsistancies to filter out the fact from the fiction. You can also tell them you're glad they are having a good time, but you'd rather not hear about OM. That is ground rule one with my boys and they are very respecful of it. It may be a bit too late in your situation though.
Anyway, if you prove they were in the same bed in the same room with the boys, I'd be all over that, rest assured.
Me 35/XW 33 S13 & S12 M: 10/17/98 OM & S: 07/08 D final 06/09/09 12/03/09 - 06/13/10 "Piercing" 06/13/10: Engaged to Re-marry 10/17/10 06/25/10: Expecting baby #3 2/14/11