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Email BoardMerle S. Casey Elementary
219 North Eucalyptus Avenue, Rialto, CA 92376-6025
Summary
Merle S. Casey Elementary is badly underperforming.
Reading and math results average to the 19th percentile among comparable California schools.
Only 28.4% of students met California's reading standard, but it is slowly trending up.
Math is weaker: 22.8% of students met California's math standard, but it is trending up.
Proficiency stats
| Current Reading Proficiency | 28.4% |
| Current Math Proficiency | 22.8% |
| Reading State Rank | 3,797/4,657 (18th percentile) |
| Math State Rank | 3,718/4,657 (20th percentile) |
School information
| Student / Teacher Ratio | 19:1 |
| Student enrollment (2024–25) | 563 |
| Low-Income Students | 524 (93.1%) |
| English Learners | 168 (29.8%) |
School Website
Great Schools
Niche
Ed-Data
CAASPP| Admissions | Open enrollment |
|---|---|
| Charter school | No |
| Magnet school | No |
Test score trends
Reading rose 1.4 points from last year and rose 3.4 points over the full period. Math rose 3.6 points from last year and rose 5.7 points over the full period.
•Math +5.7 percentage points (2024–2026)Reading Proficiency Scores
2026 state test results
Race and Ethnicity
Only one group has a reportable reading result.
Distribution of Scores by Grade
The share meeting the reading standard ranges from 16.7% to 34.4% across the grades shown. Overall, the school’s reading results rank No. 3,797 of 4,657 among California schools in the same grade-level category.
Low-Income vs Non-Low-Income
The 17.3-point reading income gap is narrower than the 19.8-point gap at a typical California K–5 school. It narrowed over the period shown.
•
English Learners vs English Native
7.3% of English learners meet the reading standard, compared with 31.6% of English-only students. The gap widened as English-learner results rose and English-only results rose.
•Math Proficiency Scores
2026 state test results
Race and Ethnicity
Only one group has a reportable math result.
Distribution of Scores by Grade
The share meeting the math standard ranges from 13.1% to 36.7% across the grades shown. Overall, the school’s math results rank No. 3,718 of 4,657 among California schools in the same grade-level category.
Low-Income vs Non-Low-Income
The 17.3-point math income gap is narrower than the 20.0-point gap at a typical California K–5 school. It narrowed over the period shown.
•English Learners vs English Native
7.3% of English learners meet the math standard, compared with 24.5% of English-only students. The gap widened as English-learner results fell and English-only results rose.
•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 Merle S. Casey Elementary compare within the district?
Merle S. Casey Elementary is No. 17 in reading and No. 14 in math proficiency among the 19 K–5 schools in Rialto Unified with 2026 results.
Explore the district’s schoolsHow does Merle S. Casey Elementary rank in California?
Merle S. Casey Elementary ranks No. 3,797 of 4,657 in reading and No. 3,718 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 Merle S. Casey Elementary compare within the district?
Low-income students here rank No. 16 in reading and No. 11 in math among 19 K–5 district schools with reportable 2026 results for this group. 27.1% meet the reading standard and 21.6% meet the math standard.
See results by student groupHow does Merle S. Casey Elementary compare with other schools in Rialto?
Merle S. Casey Elementary is No. 14 in reading and No. 11 in math proficiency among the 16 K–5 schools in Rialto with 2026 results.
Explore schools in RialtoHow does Merle S. Casey Elementary compare with other schools in San Bernardino County?
Merle S. Casey Elementary is No. 91 in reading and No. 84 in math proficiency among the 112 K–5 schools in San Bernardino County with 2026 results.
Explore schools in San Bernardino CountyWhich schools should I compare?
Schools serving K–5 in the same district.
| School | Math | Reading |
|---|---|---|
| Merle S. Casey ElementaryThis school | 22.8% | 28.4% |
| A. H. Morgan Elementary | 27.5% | 38.0% |
| Charlotte N. Werner Elementary | 16.0% | 25.0% |
