Our rankings were as follows:

CALIFORNIA: 76th

NATIONAL: 542nd

STEM RANK: 178th

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Diamond bar High's rankings are a result of a partnership among students, staff, parents, community members, and the district office in supporting the balance provided by our foundations of the four A’s: Academics, Activities, the Arts, and Athletics.

At the center of our foundations is our belief in providing equitable access to opportunities for success to ALL of our students. US News & World Report rankings intend to reflect great high schools that serve all of their students well, not just those who are college bound. These high schools must be able to produce measurable academic outcomes to show how they are successfully educating their student body across a range of performance indicators.

The ranking factors measured performance on state math and reading proficiency tests; college readiness measured by participation in and performance on challenging college-level coursework using Advanced Placement and International Baccalaureate examinations; and graduation rates. The highest ranked U.S. public schools in the 2019 U.S. News Best High Schools rankings are those whose attendees demonstrated outstanding outcomes above expectations in the state assessments, participated in and passed a diverse array of college-level exams and graduated in high proportions.