Summary:
In the 91765 zip code of Diamond Bar, California, there is one public high school, Diamond Bar High School, serving grades 9-12 with an enrollment of over 2,500 students as part of the highly-rated Walnut Valley Unified School District.
Diamond Bar High is a standout, consistently ranking in the top 5% of all California high schools, with a 95.8% graduation rate that far exceeds the state average. Students perform very well in English and math, though math scores are slightly below the district average, and science proficiency, while above the state, is an area where the entire Walnut Valley Unified district faces a shared challenge. The school maintains this excellence with efficient use of resources, spending about $16,500 per student.
An interesting finding is the school's chronic absenteeism rate, which, at 10.3%, is higher than the district's rate despite the strong academic results, suggesting room for growth if attendance improves. The student body shows economic diversity, with about 23% qualifying for free or reduced lunch. Overall, Diamond Bar High offers a model of stable, high-quality education supported by a top-performing district, with specific metrics pointing to opportunities for even greater achievement.
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