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Email BoardOld River Elementary
30 Learning Lane, Brentwood, CA 94513-5214
Summary
Old River Elementary is underperforming.
Reading and math results average to the 79th percentile among comparable California schools.
57.6% of students met California's reading standard, but it is trending down slightly.
Math is weaker: 47.5% of students met California's math standard, and it is trending down slightly.
Proficiency stats
| Current Reading Proficiency | 57.6% |
| Current Math Proficiency | 47.5% |
| Reading State Rank | 391/1,734 (78th percentile) |
| Math State Rank | 349/1,735 (80th percentile) |
School information
| Student / Teacher Ratio | 23:1 |
| Student enrollment (2024–25) | 332 |
| Low-Income Students | 51 (15.4%) |
| English Learners | 20 (6.0%) |
School Website
Great Schools
Niche
Ed-Data
CAASPP| Admissions | Open enrollment |
|---|---|
| Charter school | No |
| Magnet school | No |
Test score trends
Reading rose 2.2 points from last year and fell 1.0 points over the full period. Math fell 3.7 points from last year and fell 2.2 points over the full period.
•Math -2.2 percentage points (2024–2026)Reading Proficiency Scores
2026 state test results
Race and Ethnicity
Most students in every reported group meet the reading standard. Two or more races and Hispanic or Latino students have the strongest results.
Distribution of Scores by Grade
The share meeting the reading standard ranges from 51.6% to 75.0% across the grades shown. Overall, the school’s reading results rank in the top 23% among California schools in the same grade-level category.
Low-Income vs Non-Low-Income
The 17.4-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
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
Two or more races students have the strongest math results at about 60% proficiency. The other reported groups range from about 40% to 50%.
Distribution of Scores by Grade
The share meeting the math standard ranges from 21.0% to 64.9% across the grades shown. Overall, the school’s math results rank in the top 21% among California schools in the same grade-level category.
Low-Income vs Non-Low-Income
The 10.7-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
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 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 Old River Elementary compare within the district?
Old River Elementary is No. 1 in both reading and math proficiency among the 2 K–8 schools in Knightsen Elementary with 2026 results.
Explore the district’s schoolsHow does Old River Elementary rank in California?
Old River Elementary ranks No. 391 of 1,734 in reading and No. 349 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 Old River Elementary compare within the district?
Low-income students here rank No. 1 in both subjects among 2 K–8 district schools with reportable 2026 results for this group. 44.8% meet the reading standard and 39.7% meet the math standard.
See results by student groupHow does Old River Elementary compare with other schools in Contra Costa County?
Old River Elementary is No. 3 in reading and No. 4 in math proficiency among the 15 K–8 schools in Contra Costa County with 2026 results.
Explore schools in Contra Costa CountyWhich schools should I compare?
Schools serving K–8 in the same district.
| School | Math | Reading |
|---|---|---|
| Old River ElementaryThis school | 47.5% | 57.6% |
| Knightsen Elementary | 26.8% | 42.9% |
