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For the 2025-26 school year, there is 1 public high school serving 2,532 students in Diamond Bar, CA. The top-ranked public high school in Diamond Bar, CA is Diamond Bar High School. Overall testing rank is based on a school's combined math and reading proficiency test score ranking.

Diamond Bar, CA public high school have an average math proficiency score of 68% (versus the California public high school average of 28%), and reading proficiency score of 78% (versus the 51% statewide average). High schools in Diamond Bar have an average ranking of 10/10, which is in the top 5% of California public high schools.

Diamond Bar, CA public high school have a Graduation Rate of 97%, which is more than the California average of 86%.

The school with highest graduation rate is Diamond Bar High School, with 97% graduation rate. Read more about public school graduation rate statistics in California or national school graduation rate statistics.

Minority enrollment is 94% of the student body (majority Asian), which is more than the California public high school average of 79% (majority Hispanic).