My ex has paid maintenance sporadically over the last 15 years. When he got a high paid job 4 years ago I went to the CSA and got paid through them and then through direct pay. My daughter is 18 & has just finished her A-level exams. He was due to pay maintenance today but hasn’t done so. I think his legal obligation stops when school finishes. Not when the exams do. Is there a guidance document or official site that states the right time clearly ? Even if I tell him he won’t believe it unless I can show him something officially.