Mo. Rev. Stat. § 165.091: School money, how disbursed.

No money belonging to the school district shall be paid by any depositary or from any investment account maintained pursuant to section 165.051 except upon the check of the treasurer and president of the board of the school district or order for payment duly issued by the treasurer. The board, by resolution, may direct that the signatures be affixed to the checks in facsimile in the manner and with the effect provided in sections 105.273 to 105.278.