The school board at its first meeting, and every two years thereafter, shall elect a chairman, a vice-chairman and such other officers as it deems necessary who shall serve for two years each and until their successors are elected and qualify. No person may succeed himself as chairman of the board. The school board shall meet at least quarterly and at such other times as may be designated by the chairman. Special meetings may be called by the chairman or by a majority of the members of the board upon at least seventy-two hours notice. Five members of the board shall constitute a quorum at all meetings thereof. The members of the board shall be paid per diem, mileage and subsistence as provided by law for members of boards, commissions and committees.