S.C. Code § 24-25-40
The Palmetto Unified School District No. 1 shall be under the control and management of a board of nine trustees who shall operate the district under the supervision of the State Department of Corrections. Four members of the school board shall be appointed by the Director of the Department of Corrections, four members of the school board shall be appointed by the State Superintendent of Education, and one member of the school board shall be appointed by the Governor. The members of the board shall be appointed for terms of four years each and until their successors are appointed and qualify; except that of those first appointed, the members appointed by the Director of the Department of Corrections and the members appointed by the State Superintendent of Education shall be appointed for terms of one, two, three and four years, respectively, such terms to be designated by the Director of the Department of Corrections and the State Superintendent of Education when making such appointments. The member initially appointed by the Governor also shall be appointed for a term of four years. Vacancies on the board shall be filled for the remainder of the unexpired term by appointment in the same manner as provided for the original appointment.
S.C. Code § 24-25-40