The classrooms included a study hall, a library, a recitation room, a science laboratory, and the principal's office.

[4] Under Monroe's tenure, in 1905 a new building was opened at the corner of Philadelphia and Lindley, which is the current site of Whittier High School today.

A rapid influx of students necessitated the constructions of a girls' gym, an administration building and an auditorium in 1923.

In 1930, the cardinal was chosen as the Whittier High mascot because it is a native of Mill Creek (the area just north of Rio Hondo College).

During World War II, Whittier High gained its first female principal, Marion Wilson Hodge.

Growth continued and in 1953, California High School opened, followed by Santa Fe in 1955, Sierra in 1957, Pioneer in 1959, La Serna in 1961, and Monte Vista in 1964.

Following Sierra's closure, Whittier High School's enrollment slowly increased in the ensuing decades.

Albertson field after the principal from 1908-1930, the Myron Claxton Science Building, the Vic Lopez Auditorium, the Bob Chandler Sports Complex, and the Marion Wilson Hodge fountain.

Abby De La Rosa (Class of 2008) Radio DJ, Founder of Club Tummy.