Mo. Rev. Stat. § 161.112
The state board of education shall appoint a commissioner of education as its chief administrative officer. The commissioner shall be a citizen who has resided in the state for at least one year immediately preceding his appointment and who possesses educational attainment and breadth of experience in the administration of public education. The board shall prescribe the duties of the commissioner and fix his compensation, and may remove him at its discretion.
(L. 1963 p. 200 § 2-11)
(Source: RSMo 1959 § 160.090)