Rocky Boy West is a census-designated place (CDP) in Hill and Chouteau counties in the U.S. state of Montana. The population was 890 at the 2010 census.
Parker School is located in southeastern Hill County and northeastern Chouteau County at 48°17′58″N 109°59′49″W / 48.29944°N 109.99694°W, 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 corners of the CDP, leading northeast 23 miles (37 km) to Havre and southwest 48 miles (77 km) to Fort Benton.
According to the United States Census Bureau, the Parker School CDP has a total area of 5.4 square miles (14.1 km2), all land.