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Email BoardArma J. Shull Elementary
825 North Amelia, San Dimas, CA 91773-1437
Summary
Arma J. Shull Elementary is a good school.
Reading and math results average to the 92nd percentile among comparable California schools.
76.6% of students met California's reading standard, but it is trending down.
74.8% of students met California's math standard, which is strong statewide but is trending down.
Proficiency stats
| Current Reading Proficiency | 76.6% |
| Current Math Proficiency | 74.8% |
| Reading State Rank | 383/4,657 (92nd percentile) |
| Math State Rank | 409/4,657 (91st percentile) |
School information
| Student / Teacher Ratio | 22:1 |
| Student enrollment (2024–25) | 633 |
| Low-Income Students | 166 (26.6%) |
| English Learners | 29 (4.6%) |
School Website
Great Schools
Niche
Ed-Data
CAASPP| Admissions | Open enrollment |
|---|---|
| Charter school | No |
| Magnet school | No |
Test score trends
Reading fell 2.8 points from last year and fell 4.0 points over the full period. Math fell 5.4 points from last year and fell 4.3 points over the full period.
•Math -4.3 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 73.2% to 82.9% across the grades shown. Overall, the school’s reading results rank in the top 9% among California schools in the same grade-level category.
Low-Income vs Non-Low-Income
The 10.0-point reading income gap is narrower than the 19.8-point gap at a typical California K–5 school. It narrowed slightly over the period shown.
•English Learners vs English Native
Results for both language groups are unavailable, so a current reading gap cannot be calculated.
Math Proficiency Scores
2026 state test results
Race and Ethnicity
Asian students have the strongest math results at about 94% proficiency. The other reported groups range from about 68% to 93%.
Distribution of Scores by Grade
The share meeting the math standard ranges from 69.5% to 78.6% across the grades shown. Overall, the school’s math results rank in the top 9% among California schools in the same grade-level category.
Low-Income vs Non-Low-Income
The 14.4-point math income gap is narrower than the 20.0-point gap at a typical California K–5 school. It widened over the period shown.
•English Learners vs English Native
Results for both language groups are unavailable, so a current math gap cannot be calculated.
Progress as students move up
2023–2026
How we compare income gaps
“Typical” means the median gap across 1,832 schools for reading and 1,839 for math. The comparison uses 2026 California K–5 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 Arma J. Shull Elementary compare within the district?
Arma J. Shull Elementary is No. 1 in reading and No. 3 in math proficiency among the 8 K–5 schools in Bonita Unified with 2026 results.
Explore the district’s schoolsHow does Arma J. Shull Elementary rank in California?
Arma J. Shull Elementary ranks No. 383 of 4,657 in reading and No. 409 of 4,657 in math for 2026. These proficiency rankings compare California schools in the same grade-level category.
How do low-income students at Arma J. Shull Elementary compare within the district?
Low-income students here rank No. 1 in reading and No. 4 in math among 8 K–5 district schools with reportable 2026 results for this group. 69.8% meet the reading standard and 65.0% meet the math standard.
See results by student groupHow does Arma J. Shull Elementary compare with other schools in San Dimas?
Arma J. Shull Elementary is No. 1 in both reading and math proficiency among the 4 K–5 schools in San Dimas with 2026 results.
Explore schools in San DimasHow does Arma J. Shull Elementary compare with other schools in Los Angeles County?
Arma J. Shull Elementary is No. 71 in reading and No. 75 in math proficiency among the 780 K–5 schools in Los Angeles County with 2026 results.
Explore schools in Los Angeles CountyWhich schools should I compare?
Schools serving K–5 in the same district.
| School | Math | Reading |
|---|---|---|
| Arma J. Shull ElementaryThis school | 74.8% | 76.6% |
| Allen Avenue Elementary | 61.5% | 63.4% |
| Fred Ekstrand Elementary | 55.3% | 57.4% |
