What conditions might make it reasonable to require that a parent support a child who is no longer a minor?

Emancipation ends the parents' rights to control his or her minor child or to participate in any decision-making about the child. If a child is emancipated, the parents no longer have the right to determine where the child lives or goes to school, or how the child's money is spent. The parent also has no right to the minor's wages or earnings.