Where the educational program of a school district is structured on a basis other than grades one through six, seven through nine, and ten through twelve, the highest limitations of Section 22-16-4, NMSA 1978, shall be applied for all students attending each attendance center served by the school bus route. The walking distance for each attendance center is based on the highest-grade level served.
N.M. Admin. Code § 6.41.3.15