Rocky Boy West is located in southeastern Hill County and northeastern Chouteau County in the northwest part of the
Rocky Boy Indian Reservation. It is bordered by the community of
Box Elder to the northwest.
U.S. Route 87 crosses the northwest corner of the CDP, leading northeast to
Havre and southwest to
Fort Benton. According to the
United States Census Bureau, the Parker School CDP has a total area of , all land. ==Demographics==