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Email BoardRio Mesa High
545 Central Avenue, Oxnard, CA 93030-1045
Summary
Rio Mesa High is underperforming.
Reading and math results average to the 46th percentile among comparable California schools.
Only 45.8% of students met California's reading standard, and it is trending down slightly.
Math is weaker: 21.8% of students met California's math standard, but it is trending up.
Proficiency stats
| Current Reading Proficiency | 45.8% |
| Current Math Proficiency | 21.8% |
| Reading State Rank | 945/1,596 (41st percentile) |
| Math State Rank | 776/1,596 (51st percentile) |
School information
| Student / Teacher Ratio | 22:1 |
| Student enrollment (2024–25) | 1,951 |
| Low-Income Students | 1,416 (72.6%) |
| English Learners | 271 (13.9%) |
School Website
Great Schools
Niche
Ed-Data
CAASPP| Admissions | Open enrollment |
|---|---|
| Charter school | No |
| Magnet school | No |
Test score trends
Reading fell 0.5 points from last year and fell 0.6 points over the full period. Math rose 1.6 points from last year and rose 6.9 points over the full period.
•Math +6.9 percentage points (2024–2026)Reading Proficiency Scores
2026 state test results
Race and Ethnicity
Filipino and Two or more races students have the strongest results.
Distribution of Scores by Grade
45.8% of tested students meet the reading standard in the grade shown. Overall, the school’s reading results rank No. 945 of 1,596 among California schools in the same grade-level category.
Low-Income vs Non-Low-Income
The 9.2-point reading income gap is narrower than the 14.7-point gap at a typical California 9–12 school. It widened slightly over the period shown.
•English Learners vs English Native
7.9% of English learners meet the reading standard, compared with 46.1% of English-only students. The gap narrowed as English-learner results rose and English-only results fell.
•Math Proficiency Scores
2026 state test results
Race and Ethnicity
Filipino students have the strongest math results at about 86% proficiency. The other reported groups range from about 18% to 18%.
Distribution of Scores by Grade
21.8% of tested students meet the math standard in the grade shown. Overall, the school’s math results rank in the top 49% among California schools in the same grade-level category.
Low-Income vs Non-Low-Income
The 18.6-point math income gap is slightly wider than the 14.2-point gap at a typical California 9–12 school. It widened over the period shown.
•English Learners vs English Native
2.4% of English learners meet the math standard, compared with 23.6% of English-only students. The gap widened as English-learner results rose and English-only results rose.
•How we compare income gaps
“Typical” means the median gap across 876 schools for reading and 882 for math. The comparison uses 2026 California 9–12 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 Mesa High compare within the district?
Rio Mesa High is No. 7 in reading and No. 6 in math proficiency among the 10 9–12 schools in Oxnard Union High with 2026 results.
Explore the district’s schoolsHow does Rio Mesa High rank in California?
Rio Mesa High ranks No. 945 of 1,596 in reading and No. 776 of 1,596 in math for 2026. These proficiency rankings compare California schools in the same grade-level category.
How do low-income students at Rio Mesa High compare within the district?
Low-income students here rank No. 7 in reading and No. 6 in math among 10 9–12 district schools with reportable 2026 results for this group. 44.1% meet the reading standard and 18.3% meet the math standard.
See results by student groupHow does Rio Mesa High compare with other schools in Oxnard?
Rio Mesa High is No. 5 in reading and No. 4 in math proficiency among the 8 9–12 schools in Oxnard with 2026 results.
Explore schools in OxnardHow does Rio Mesa High compare with other schools in Ventura County?
Rio Mesa High is No. 22 in reading and No. 19 in math proficiency among the 26 9–12 schools in Ventura County with 2026 results.
Explore schools in Ventura CountyWhich schools should I compare?
Schools serving 9–12 in the same district.
| School | Math | Reading |
|---|---|---|
| Rio Mesa HighThis school | 21.8% | 45.8% |
| Channel Islands High | 16.9% | 49.7% |
| Condor High | 37.1% | 41.4% |
