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Email BoardChaparral Middle
1405 South Spruce Tree Drive, Diamond Bar, CA 91765-2571
Summary
Chaparral Middle is an excellent school.
Reading and math results average to the 97th percentile among comparable California schools.
81.4% of students met California's reading standard, but it is trending down slightly.
81.0% of students met California's math standard, which is excellent statewide and is trending up slightly.
Proficiency stats
| Current Reading Proficiency | 81.4% |
| Current Math Proficiency | 81.0% |
| Reading State Rank | 46/1,204 (96th percentile) |
| Math State Rank | 19/1,204 (99th percentile) |
School information
| Student / Teacher Ratio | 28:1 |
| Student enrollment (2024–25) | 1,349 |
| Low-Income Students | 335 (24.8%) |
| English Learners | 135 (10.0%) |
School Website
Great Schools
Niche
Ed-Data
CAASPP| Admissions | Open enrollment |
|---|---|
| Charter school | No |
| Magnet school | No |
Test score trends
Reading fell 1.4 points from last year and fell 1.0 points over the full period. Math rose 0.7 points from last year and rose 1.7 points over the full period.
•Math +1.7 percentage points (2024–2026)Reading Proficiency Scores
2026 state test results
Race and Ethnicity
Most students in every reported group meet the reading standard. Filipino and Asian students have the strongest results.
Distribution of Scores by Grade
The share meeting the reading standard ranges from 77.6% to 83.6% across the grades shown. Overall, the school’s reading results rank in the top 4% among California schools in the same grade-level category.
Low-Income vs Non-Low-Income
The 12.1-point reading income gap is narrower than the 19.5-point gap at a typical California 6–8 school. It widened over the period shown.
•English Learners vs English Native
24.3% of English learners meet the reading standard, compared with 82.9% of English-only students. The gap widened as English-learner results fell and English-only results rose.
•Math Proficiency Scores
2026 state test results
Race and Ethnicity
Asian students have the strongest math results at about 88% proficiency. The other reported groups range from about 52% to 77%.
Distribution of Scores by Grade
The share meeting the math standard ranges from 78.0% to 82.8% across the grades shown. Overall, the school’s math results rank in the top 2% among California schools in the same grade-level category.
Low-Income vs Non-Low-Income
The 7.7-point math income gap is narrower than the 19.2-point gap at a typical California 6–8 school. It widened over the period shown.
English Learners vs English Native
55.5% of English learners meet the math standard, compared with 72.0% of English-only students. The gap narrowed as English-learner results rose and English-only results fell.
•Progress as students move up
2023–2026
How we compare income gaps
“Typical” means the median gap across 795 schools for reading and 796 for math. The comparison uses 2026 California 6–8 schools with at least 20 tested students in each income group and a reported low-income student population. Each school counts once. Its gap is non-low-income proficiency minus low-income proficiency, including negative gaps. California state test data
Understanding this school
How does Chaparral Middle compare within the district?
Chaparral Middle is No. 1 in both reading and math proficiency among the 3 6–8 schools in Walnut Valley Unified with 2026 results.
Explore the district’s schoolsHow does Chaparral Middle rank in California?
Chaparral Middle ranks No. 46 of 1,204 in reading and No. 19 of 1,204 in math for 2026. These proficiency rankings compare California schools in the same grade-level category.
How do low-income students at Chaparral Middle compare within the district?
Low-income students here rank No. 1 in both subjects among 3 6–8 district schools with reportable 2026 results for this group. 72.4% meet the reading standard and 75.3% meet the math standard.
See results by student groupHow does Chaparral Middle compare with other schools in Los Angeles County?
Chaparral Middle is No. 8 in reading and No. 2 in math proficiency among the 258 6–8 schools in Los Angeles County with 2026 results.
Explore schools in Los Angeles CountyWhich schools should I compare?
Schools serving 6–8 in the same district.
| School | Math | Reading |
|---|---|---|
| Chaparral MiddleThis school | 81.0% | 81.4% |
| South Pointe Middle | 80.1% | 78.9% |
| Suzanne Middle | 64.7% | 74.1% |
