Сама не знаешь.May extend past 18 if still in high school. Support ends when the child graduates from high school or reaches 19 years of age. 18 years of age, or as long as the child attends high school on a full time basis or a court order requires the duty of support to continue. Unless specified in the court order.http://www.ncsl.org/research/human-services/termination-of-child-support-age-of-majority.aspx