i really think you have to push the issue of lack of discipline in the court hearing. yes courts take into account the children's wishes, but they also take a dim view of permissive/liberal parenting approaches. stay calm, focused and start making lists/written details of all aspects of why your child should remain with you (previous schooling, discipline, dad's doubts etc.) and try to get evidence as best you can - from texts, emails etc. if written proof is nil. after all, you have done all the donkey work in raising your son - try to ensure that your ex does not swan off with all the glory for it. keep coming on here for advice, listen to your brief. we're all behind you! x