§ 3621. Definitions. As used in this part and subdivision seven of section thirty-six hundred two of this article:
5. "Total annual allowable mileage" means the actual mileage for transporting pupils to and from school once daily over scheduled routes attributable to district-owned or leased school buses for the school year period of July first through June thirtieth, based odometer readings, including mileage for school buses disposed of during the July first through June thirtieth period.