Mo. Rev. Stat. § 205.560

When two-thirds of the voters as provided in section 205.460 shall vote to cease paying said tax the county commission of said county shall within three years thereafter order the same sold and all money acquired from the sale after paying all indebtedness of said hospital shall be turned into the school funds of said township or townships as their interest may appear; provided, the voters of said township or townships do not, by a vote of two-thirds reconsider and vote to continue said tax as before.