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Email BoardRio Del Mar
3150 Thames River, Oxnard, CA 93036-5339
Summary
Rio Del Mar is badly underperforming.
Reading and math results average to the 37th percentile among comparable California schools.
Only 35.2% of students met California's reading standard, and it is trending down slightly.
Math is weaker: 33.1% of students met California's math standard, and it is trending down slightly.
Proficiency stats
| Current Reading Proficiency | 35.2% |
| Current Math Proficiency | 33.1% |
| Reading State Rank | 3,133/4,657 (33rd percentile) |
| Math State Rank | 2,737/4,657 (41st percentile) |
School information
| Student / Teacher Ratio | 25:1 |
| Student enrollment (2024–25) | 499 |
| Low-Income Students | 400 (80.2%) |
| English Learners | 114 (22.8%) |
School Website
Great Schools
Niche
Ed-Data
CAASPP| Admissions | Open enrollment |
|---|---|
| Charter school | No |
| Magnet school | No |
Test score trends
Reading rose 2.9 points from last year and fell 0.5 points over the full period. Math rose 1.2 points from last year and fell 0.5 points over the full period.
•Math -0.5 percentage points (2024–2026)Reading Proficiency Scores
2026 state test results
Race and Ethnicity
White and Hispanic or Latino students have the strongest results.
Distribution of Scores by Grade
The share meeting the reading standard ranges from 28.7% to 40.0% across the grades shown. Overall, the school’s reading results rank No. 3,133 of 4,657 among California schools in the same grade-level category.
Low-Income vs Non-Low-Income
The 32.1-point reading income gap is wider than the 19.8-point gap at a typical California K–5 school. It widened over the period shown.
•English Learners vs English Native
13.3% of English learners meet the reading standard, compared with 37.8% 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
White students have the strongest math results at about 50% proficiency. The other reported groups range from about 30% to 30%.
Distribution of Scores by Grade
The share meeting the math standard ranges from 31.9% to 34.5% across the grades shown. Overall, the school’s math results rank No. 2,737 of 4,657 among California schools in the same grade-level category.
Low-Income vs Non-Low-Income
The 25.7-point math income gap is wider than the 20.0-point gap at a typical California K–5 school. It widened slightly over the period shown.
•English Learners vs English Native
18.0% of English learners meet the math standard, compared with 35.5% 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 Rio Del Mar compare within the district?
Rio Del Mar is No. 1 in both reading and math proficiency among the 5 K–5 schools in Rio Elementary with 2026 results.
Explore the district’s schoolsHow does Rio Del Mar rank in California?
Rio Del Mar ranks No. 3,133 of 4,657 in reading and No. 2,737 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 Rio Del Mar compare within the district?
Low-income students here rank No. 1 in both subjects among 5 K–5 district schools with reportable 2026 results for this group. 30.4% meet the reading standard and 29.3% meet the math standard.
See results by student groupHow does Rio Del Mar compare with other schools in Oxnard?
Rio Del Mar is No. 6 in reading and No. 4 in math proficiency among the 22 K–5 schools in Oxnard with 2026 results.
Explore schools in OxnardHow does Rio Del Mar compare with other schools in Ventura County?
Rio Del Mar is No. 57 in reading and No. 55 in math proficiency among the 91 K–5 schools in Ventura County with 2026 results.
Explore schools in Ventura CountyWhich schools should I compare?
Schools serving K–5 in the same district.
| School | Math | Reading |
|---|---|---|
| Rio Del MarThis school | 33.1% | 35.2% |
| Rio del Norte | 19.2% | 31.4% |
| Rio Lindo Elementary | 25.2% | 29.1% |
