Mich. Comp. Laws § 380.944
If, within 30 days after the hearing, the superintendent of public instruction determines that the division would be in the best interest of the education of the pupils in the school districts affected by the division, including but not limited to consideration of such matters as class size, certified and noncertified staff, physical plants, transportation, curriculum, administration, labor relations, racial makeup, and cost effectiveness, he or she shall issue a written order approving the division of the school district. If the superintendent of public instruction determines that the division would not be in the best interest of the education of the pupils in the school districts affected by the division, he or she shall issue a written order disapproving the division. A copy of the order shall be transmitted to the secretary of the board of education of each school district whose boundaries are to be affected by the division.
MCL 380.944