Overnight schools and camps shall maintain a clean, well-lighted and sanitary infirmary. The minimal standard for the number of beds in any such infirmary shall be determined by the county health officer, based on the number of resident students, the arrangements for transferring sick students to their homes and hospitals and other conditions affecting the care of the sick students. Such infirmaries shall be equipped with supplies prescribed by the county health officer as adequate to fulfill the needs of the particular institution. (Mont. Co. Code 1965, § 97-27; 1972 L.M.C., ch. 16, § 13.)