Is this your school? Email the board to prioritize reading!
Email BoardArroyo Elementary
1700 East Seventh Street, Ontario, CA 91764-1204
Summary
Arroyo Elementary is badly underperforming.
Reading and math results average to the 46th percentile among comparable California schools.
Only 39.9% of students met California's reading standard, but it is trending up.
Math is weaker: 30.0% of students met California's math standard, but it is trending up.
Proficiency stats
| Current Reading Proficiency | 39.9% |
| Current Math Proficiency | 30.0% |
| Reading State Rank | 987/1,734 (43rd percentile) |
| Math State Rank | 873/1,735 (50th percentile) |
School information
| Student / Teacher Ratio | 19:1 |
| Student enrollment (2024–25) | 493 |
| Low-Income Students | 424 (86.0%) |
| English Learners | 111 (22.5%) |
School Website
Great Schools
Niche
Ed-Data
CAASPP| Admissions | Open enrollment |
|---|---|
| Charter school | No |
| Magnet school | No |
Test score trends
Reading rose 1.8 points from last year and rose 8.8 points over the full period. Math rose 5.1 points from last year and rose 7.1 points over the full period.
•Math +7.1 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 29.2% to 51.9% across the grades shown. Overall, the school’s reading results rank No. 987 of 1,734 among California schools in the same grade-level category.
Low-Income vs Non-Low-Income
The 21.3-point reading income gap is slightly wider than the 16.5-point gap at a typical California K–8 school. It widened over the period shown.
•English Learners vs English Native
17.2% of English learners meet the reading standard, compared with 39.3% of English-only students. The gap narrowed 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 20.8% to 42.3% across the grades shown. Overall, the school’s math results rank No. 873 of 1,735 among California schools in the same grade-level category.
Low-Income vs Non-Low-Income
The 14.5-point math income gap is narrower than the 15.5-point gap at a typical California K–8 school. It widened over the period shown.
•English Learners vs English Native
12.3% of English learners meet the math standard, compared with 30.8% 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 802 schools for reading and 801 for math. The comparison uses 2026 California K–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 Arroyo Elementary compare within the district?
Arroyo Elementary is No. 5 in both reading and math proficiency among the 5 K–8 schools in Ontario-Montclair with 2026 results.
Explore the district’s schoolsHow does Arroyo Elementary rank in California?
Arroyo Elementary ranks No. 987 of 1,734 in reading and No. 873 of 1,735 in math for 2026. These proficiency rankings compare California schools in the same grade-level category.
How do low-income students at Arroyo Elementary compare within the district?
Low-income students here rank No. 5 in both subjects among 5 K–8 district schools with reportable 2026 results for this group. 37.5% meet the reading standard and 28.4% meet the math standard.
See results by student groupHow does Arroyo Elementary compare with other schools in Ontario?
Arroyo Elementary is No. 5 in both reading and math proficiency among the 5 K–8 schools in Ontario with 2026 results.
Explore schools in OntarioHow does Arroyo Elementary compare with other schools in San Bernardino County?
Arroyo Elementary is No. 18 in reading and No. 17 in math proficiency among the 28 K–8 schools in San Bernardino County with 2026 results.
Explore schools in San Bernardino CountyWhich schools should I compare?
Schools serving K–8 in the same district.
| School | Math | Reading |
|---|---|---|
| Arroyo ElementaryThis school | 30.0% | 39.9% |
| Central Language Academy | 37.7% | 48.9% |
| Edison Elementary | 69.7% | 77.4% |
