| Motto: | Pursuing Excellence |
| Established: | 1955 |
| Type: | Public |
| Principal: | Gabriel Flores |
| Grades: | 9–12 |
| Address: | 4921 North Cedar Avenue |
| Country: | USA |
| Ratio: | 24.18 |
| Staff: | 78.04 (FTE) |
| Enrollment: | 1,887 (2021–22)[1] |
| Nickname: | Knights |
| Colors: | Columbia Blue, White, and Black |
| Yearbook: | Shield |
| Newspaper: | Knight's Banner |
Arroyo High School, located in El Monte, California, United States, is a school in the El Monte Union High School District. The attendance area served by Arroyo High School consists of four different communities: El Monte, Temple City, Arcadia, and an unincorporated area of Los Angeles County.
Arroyo High School opened its doors in 1955 and its first graduating class was the class of 1958. Since then, more than 20,000 students have received their high school diplomas from AHS.[2]
Students at Arroyo High School have the opportunity to join a variety of sports teams including: Football, Cheerleading, Girls Volleyball, Boys/Girls Cross Country, Track and Field, Boys/Girls Tennis, Boys/Girls Basketball, Boys/Girls Soccer, Wrestling, Baseball, and Softball.
Arroyo High School's main rival is Rosemead High School.[3]
In 1987, Arroyo won the California State Division I Boys Cross-Country championship.[4]
In 2016, Arroyo's football program won its second CIF (California Interscholastic Federation) - Southern Section championship in Division 12.
In 2019, Arroyo’s Varsity girls' cross country team qualified for state for the first time in school history.
In 2019, Arroyo's baseball program won its first CIF championship against Marshall High School in Division 7.
Arroyo High School offers several award-winning performing arts programs including Drama, Choir, Orchestra, Band, and Colorguard.
The numerous clubs offered at Arroyo High School include Drama, Crochet, American Red Cross Club, American Cancer Society, Comedy Sports, Garden Club, Cards for Kids, Chinese Club, Speech & Debate, Medical Club, Key Club, Leo Club, Dance Club, Badminton Club, Robotics Club, Renaissance Club, National Honor Society, California Scholarship Federation (CSF), Academic Decathlon, and Science Olympiad.
Arroyo High School offers Career Technical Education (CTE) courses including Food Science, Business and Finance, Engineering Design, and Graphic Design.
Arroyo High School also offers dual enrollment courses in partnership with Rio Hondo College and Pasadena City College to provide students with the opportunity to earn free college credits and participate in a CTE pathway while earning high school credits at the same time.[5]
Foreign language classes offered at Arroyo High School include Spanish and Chinese.
As of 2022, AP and Pre-AP courses being offered at Arroyo High School include:[6] [7]