It is good that you have the school part under control. I have seen many kids who learn quickly that they can just "forget" about work. Then they blame the home arrangement "I left it at dad's house and I am not there tonight." Then parents start blaming each other and it is a mess. The student learns they can get away with it and never learn any responsibility. Its sounds, though, like you guys are doing what is best for the girls and working together for them so that is good, and could be good one day for the two of you as well.
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