Mont. Code Ann. § 20-6-215

A county superintendent of schools shall, at least once every 3 years, review the existing elementary school district boundaries in the county. The review and any recommended boundary changes must include information that the territory proposed for transfer complies with the provisions of 20-6-105 (1) through (3) and must be presented by the superintendent at a hearing conducted under 20-6-105 (6). If the superintendent orders a boundary change after the hearing, the superintendent shall forward copies of the review and the testimony at the hearing to the board of county commissioners and the state superintendent of public instruction.