Belmont opened its doors on September 11, 1923, to about 500 students, all sophomores, and 28 faculty members. Most of the school's traditions were created by those pioneer students during the first months of the school's existence. The school newspaper conducted an election to select its name, with "Sentinel" easily winning over "Progress." To this day, Belmont's students are known as Sentinels. Those first students favored “Sentinels" because they were able to oversee the entire city from their "lookout" on Crown Hill. In another election, the school's colors, green and black, were selected over brown and white. A mosaic mural by Joseph Young is located on the wall of the main building.