§ 3622. Routes. The board of education or trustees shall plan each
school transportation route, as defined in subdivision three of section
thirty-six hundred twenty-one of this article, in such manner as to
promote maximum efficiency in the operation of a school bus on such
route. Whenever practicable each route shall be planned to operate
within the boundary of a school district. If any or all pupils of a
school district receive instruction in a school or schools beyond the
boundary of such district, the board shall plan a route or routes beyond
the boundary of such district to such school or schools for such pupils.