Mont. Code Ann. § 20-7-713

At the end of each school fiscal year, the trustees of a school district that operates an adult education program may designate the portion of the adult education end-of-the-year fund balance that is to be earmarked as operating reserve for the purpose of paying, whenever a cash flow shortage occurs, adult education fund warrants issued by the district from July 1 through June 30 of the ensuing school fiscal year. The amount of the adult education fund balance that is earmarked as operating reserve may not exceed 35% of the final adult education fund budget for the ensuing school fiscal year.