I don't think anyone wants you to give anyone the riot act, and in my case H wouldn't give me the riot act if he found out. We would talk to each other as parents and decide what the consequences were for S. H is a selfish brat for leaving us, but he is trying to be a good dad now and we have always talked politely to each other when it comes to S. Even when S was getting notes everyday from daycare about hitting, we worked together to come up with solutions to the problem.
Everyone is saying you have to work together to come up with a plan that will make sure the girls are doing their homework. Not saying it is all on you or all on STBXW. Everyone is saying it is a joint effort between the two of you that will help the girls make sure they get everything done. There can't be "it wasn't my day" sayings. No one is to blame here for missing work, but D11 and D8, they are the ones who were told about the homework and chose not to do it, so now as parents you must come up for a solution to help ensure it doesn't continue. Not yell at each other for being bad parents, but really talk about what is a good idea to help them.
The two of you have to let go of your resentment for one another long enough to help your girls.
Me29 S3 H left 4/1/09 I file 8/2/10 Divorce final 5/17/11 1st http://www.tinyurl.com/25lhu52 2nd http://www.tinyurl.com/2c35ueg 3rd http://www.tinyurl.com/322yk89