Under MO law, the termination of support at 18; or upon graduation from high school or age 21, whichever occurs first; if child enrolled in vocational school or college, to 22. Furthermore, Mo. R. Civ. Pro. 88.01 and Mo. Rev. Stat. § 452.340.5 provides that if the child is enrolled in an institution of higher education, the parental support obligation shall continue until the child completes his education or until the child reaches the age of 22, whichever occurs first.
If your situation does not fit into the above, you must file a motion with the court to terminate support and prove the child is not attending college or vocational school at an institution of higher learning.
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