Miss. Code Ann. § 37-7-705

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 constituted in accordance with the provisions of Sections 37-7-707 through 37-7-711, unless the governing authorities of the municipality and of the county shall have provided for one of the alternative methods of organization as provided by Sections 37-7-715 and 37-7-717.