The board of directors, if it deems it for the best interests of the district, may reject the petition for change of boundaries or inclusion or exclusion of lands. If it deems it for the best interests of the district or the petitioners that the boundaries of the district be changed, the board shall, by order duly made, include in the district the lands described in the petition, or such part thereof as shall be determined advisable by said board or exclude from the district the lands described in the petition, or such part thereof as shall be determined advisable by said board.
K.S.A. 42-729