Mo. Rev. Stat. § 167.619

When a school or school district enrolls as a Medicaid provider pursuant to section 167.606 or receives a grant under section 167.603, the department of social services shall assure that the grants or funds are used to provide the most accessible care to school age children. No resident child shall be denied or discriminated against in school children health services or Medicaid services offered by a school district or a local health department under sections 167.600 to 167.621 on the grounds that the child regularly attends or does not attend a public, private, parochial, parish, home school, or an FPE school.