Sentinel High School is a four-year public high school in the western United States, located in Missoula, Montana.[3] Sentinel was ranked sixth-best high school in the state of Montana, two spots behind the district's Hellgate.[4] Missoula County High School added a second campus in the fall of 1956, with freshmen staying at the Higgins Avenue unit (built in 1908, now Hellgate High School), and the three upper classes moving to the new building on South Avenue, approximately 1.5 miles (2.4 km) southwest.Eight years later, the Hellgate and Sentinel names were established for the respective sites; the incoming junior class (1966) was divided between the campuses, with the full senior class (1965) at South Avenue in the last year as MCHS.In the summer of 1965, each campus became a stand alone four-year high school; the team names and colors of MCHS stayed at Sentinel, while new team names and colors were created for Hellgate, with all new traditions.