The division superintendent or, in his absence or inability to attend, a person designated by him and approved by the school board shall be present at all meetings of the school board except that on affirmative vote of a majority of the members of the school board, attendance of the division superintendent or his designee may be dispensed with at a special meeting of the school board. If matters pertaining to the division superintendent personally are under discussion at any such meeting, he shall remain subject to the call of the school board.