Child maintenance must be paid before the child reaches the age of 18 or graduates from high school, whichever comes first. If a child remains unmarried and attends high school, a parent must pay for child care before the child reaches 19. Child support commitments generally end when the child reaches the age of majority or marries, whichever comes first. In most cases, stepparents are not required to provide child care for a new spouse's natural children.