The Board of Commissioners of the South Carolina School for the Deaf and the Blind shall consist of eleven members appointed by the Governor for terms of six years and until their successors are appointed and qualify. Each congressional district must be represented by one board member, who must be a resident of that district, and four members must be appointed at large from the State. Of the members appointed at large, one must be deaf, one must be blind, one must represent the interests of persons with multiple handicaps, and one shall represent the general public. Vacancies must be filled in the manner of the original appointment for the remainder of the unexpired term. The State Superintendent of Education and the Executive Officer of the Department of Health and Environmental Control are ex officio members of the board.