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Email BoardLone Hill Middle
700 South Lone Hill, San Dimas, CA 91773-1437
Summary
Lone Hill Middle is a good school.
Reading and math results average to the 85th percentile among comparable California schools.
72.0% of students met California's reading standard, and it is holding steady.
55.4% of students met California's math standard, but it is trending up slightly.
Proficiency stats
| Current Reading Proficiency | 72.0% |
| Current Math Proficiency | 55.4% |
| Reading State Rank | 151/1,204 (88th percentile) |
| Math State Rank | 221/1,204 (82nd percentile) |
School information
| Student / Teacher Ratio | 23:1 |
| Student enrollment (2024–25) | 870 |
| Low-Income Students | 353 (40.6%) |
| English Learners | 32 (3.7%) |
School Website
Great Schools
Niche
Ed-Data
CAASPP| Admissions | Open enrollment |
|---|---|
| Charter school | No |
| Magnet school | No |
Test score trends
Reading rose 1.0 points from last year and rose 0.4 points over the full period. Math rose 1.1 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
Filipino and Asian students have the strongest results.
Distribution of Scores by Grade
The share meeting the reading standard ranges from 65.4% to 78.9% across the grades shown. Overall, the school’s reading results rank in the top 13% among California schools in the same grade-level category.
Low-Income vs Non-Low-Income
The 17.4-point reading income gap is narrower than the 19.5-point gap at a typical California 6–8 school. It narrowed over the period shown.
•
English Learners vs English Native
15.4% of English learners meet the reading standard, compared with 72.4% 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 84% proficiency. The other reported groups range from about 41% to 81%.
Distribution of Scores by Grade
The share meeting the math standard ranges from 51.3% to 58.4% across the grades shown. Overall, the school’s math results rank in the top 19% among California schools in the same grade-level category.
Low-Income vs Non-Low-Income
The 25.5-point math income gap is wider than the 19.2-point gap at a typical California 6–8 school. It widened over the period shown.
•English Learners vs English Native
38.7% of English learners meet the math standard, compared with 54.7% of English-only students. The gap narrowed as English-learner results rose and English-only results rose.
•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 Lone Hill Middle compare within the district?
Lone Hill Middle is No. 2 in both reading and math proficiency among the 2 6–8 schools in Bonita Unified with 2026 results.
Explore the district’s schoolsHow does Lone Hill Middle rank in California?
Lone Hill Middle ranks No. 151 of 1,204 in reading and No. 221 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 Lone Hill Middle compare within the district?
Low-income students here rank No. 1 in reading and No. 2 in math among 2 6–8 district schools with reportable 2026 results for this group. 62.2% meet the reading standard and 41.0% meet the math standard.
See results by student groupHow does Lone Hill Middle compare with other schools in San Dimas?
Lone Hill Middle is No. 2 in both reading and math proficiency among the 2 6–8 schools in San Dimas with 2026 results.
Explore schools in San DimasHow does Lone Hill Middle compare with other schools in Los Angeles County?
Lone Hill Middle is No. 28 in reading and No. 43 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 |
|---|---|---|
| Lone Hill MiddleThis school | 55.4% | 72.0% |
| Ramona Middle | 65.9% | 74.3% |
