So two parents are divorced and have joint custody. One parent does all school pick ups while the drop offs are shared. The parent doing pick ups gets all letters etc but never informs the other parent of any upcoming events. School assure other parent they will let him know what's happening independently. They don't though. Other parent has missed a vital meeting, nearly missed sports day and now missed a leavers assembly. What duty does the school have to ensure BOTH parents are kept informed.