Mo. Rev. Stat. § 168.405

There is hereby established an "Administrator Assessment Center", which shall be organized and administered by the department of elementary and secondary education, either individually or through contract, for the purpose of assessing prospective school administrators. Beginning September 1, 1988, all prospective administrators seeking initial administration certification shall make application to and be approved by the department of elementary and secondary education for admission to the administrator assessment center. The assessment established under this section shall include, but need not be limited to, simulations, observations, evaluations and recommendations. The assessment shall be reviewed by the certifying authority prior to issuance of a certificate. An unsatisfactory assessment shall result in the nonissuance of a certificate. Persons who are aggrieved by the nonissuance of a certificate may appeal such nonissuance in the manner provided in section 168.071.