Santiago High School was opened on September 5, 1995 in Corona, California.

The school was located on South Main Street until its current campus was built on Foothill Parkway and opened in 1999 to accommodate a growing student population.

The old campus on South Main Street was then converted into the nearby Citrus Hills Intermediate School, which was established the same year.

[6] The BOSS is a three-time participant of the Tournament of Roses Parade in Pasadena, California, having marched in 2013, 2018, and 2024.

The group also competes at several SCSBOA parade band reviews each year.