Miss. Code § 37-7-707
In all such special municipal separate school districts which may be so organized, reorganized or reconstituted to embrace the entire county in which the majority of the inhabitants of the county reside outside the corporate limits of the municipality, the board of trustees of such district shall be composed of five members, one of whom shall be a resident qualified elector of each supervisors district of the county. Said trustees shall be elected from the county at large by the qualified electors of the county at the first regular general election following the approval by the state educational finance commission of the organization of such district. Such trustees shall take office on the first Monday of January following their election.
At such election the members of the said board from supervisors districts one and five shall be elected for a term of six years, the members from districts three and four shall be elected for a term of four years, and the members from district two shall be elected for a term of two years. Thereafter members shall be elected at regular general elections as vacancies occur for terms of six years each and shall take office on the first Monday of January after their election.
Miss. Code § 37-7-707