According to the Divorce Decree, child support for my son ends when he turns 18 or graduates from high school, whichever is later. Well, he graduates June 2nd this year. I currently just mail in my payments to the Child Support Dispersement Unit, so there are no employer deduction orders that will have to be stopped. Here's my question. Once he graduates, can I just stop mailing in my payments,or, legally, do I have to do something? My ex and I are on good grounds and can decide when my last payment will be, but I just want to make sure there is nothing I have to do through the courts. We are in San Antonio, TX.