this is only my advise so take it as you will... I would not drop the charges you said you would do it...follow through
this is a fact... it is not your ex's job to inform you of school stuff...that is your job. Call the school, contact the teachers, find out what activities they are in and make a point of acknowledging them even if you can't be there
get it together and stop blaming her for your relationship with your kids
