The Merced Marching 100 has long been a highly competitive marching band for decades. The band was given its name in 1948 and has been recognized for its outstanding performances. The earliest records found of the high school band is a photo from 1905, making the Merced High School Band one of the oldest music programs in the state of California. 

The Marching 100 includes the Marching Band, Pep Band, and is the general name for all of the instrumental programs at Merced High School. The band is currently under the direction of Ashely M. Shine.