Charles (H) and W were divorced by a judgment of the trial court in 2010. They had one adult child and two children under the age of majority, a son C.C. and a daughter Ca.C. Four days before C.C.'s 19th birthday, H petitioned the trial court to order W to pay a portion of C.C.'s college expenses. W answered she was unable to contribute and that post-minority educational support was unconstitutional. The court entered a judgment requiring W to pay 25% of C.C.'s college expenses of $9,435 per semester. The Court of Civil Appeals affirmed. W appealed.