No member of any board of education shall be interested directly or indirectly in any contract with or claim against the board, nor, in the case of local and regional school districts, shall he hold office as mayor or as a member of the governing body of a municipality, nor, in the case of county special services school districts and county vocational school districts, shall he hold office as a member of the governing body of a county.
N.J.S. § 18A:12-2