Casa Grande Union High School

Casa Grande Union High School is a high school in Casa Grande, Arizona. It is part of the Casa Grande Union High School District.

The original high school and gym, now used as the Casa Grande City Hall, are listed on the National Register of Historic Places.

History
The original Casa Grande Union High School was built in 1920–21 at a cost of $135,000. It featured an indoor swimming pool and an auditorium. The large building's construction was a major milestone for the growing town between Phoenix and Tucson.

The gymnasium was added in 1936. It is Arizona's only adobe gymnasium. $12,000 was used to build the structure ($7,200 of it came from the Depression-era Works Progress Administration). The adobe was locally made with on-site earth; manufacturing it provided much-needed jobs during the Depression in hard-hit Casa Grande. It was in use as the high school until 1997, when a new, modern school with the capacity to serve 2,800 students opened at a different location. This new school quickly filled up and now has 3,200 students as of 2022-2023.

Academics
The academic departments that Casa Grande Union High offers include the following:
 * English
 * Mathematics
 * World Languages
 * Mathematics
 * Fine Arts
 * Science
 * Social Sciences
 * Exceptional Student Services
 * CTE (Career and Technical Education)

Band
In 2015, 2016, and 2017 the Casa Grande Indoor Percussion Ensemble were the Percussion Scholastic Open State Champions. Scholastic Open is the highest competing High School drumline division in Arizona.