Diamond Bar High School is a public high school located in Diamond Bar, California. It is part of the Walnut Valley Unified School District and serves grades 9 through 12. The school is known for its strong academic programs and a variety of extracurricular activities, including sports, music, and clubs. Established in 1980, Diamond Bar High School has a diverse student body and offers Advanced Placement (AP) courses to prepare students for college. The school emphasizes a well-rounded education, encouraging students to excel both academically and socially through various community engagement opportunities.