What is the name of your state? SC. When mutually pre-agreed upon terms of child support are “so ordered” in a divorce decree, with no actual child support order or court involved payments, must you petition the court for termination of child support when a child turns 18 and has graduated high school? Is the “so ordered” part considered a child support order? SC child support Code is very clear as to when support ends when no extenuating circumstances exist, however it does not address/clarify termination rules when all terms are set forth by the parents beforehand and are not part of a formal child support order. (Example: agreement is $500.00 per month per child (2) and custody is Joint, neither parent being non-custodial. Payment is direct to ex-spouse). Can you stop payment of $500.00/month for the 18 yr. old high school graduate without a petition? And is there a law or rule that states a parent MUST pay for college tuition? Not that the parent wouldn’t help, but is it mandatory?