Rio Del Oro Elementary
1220 Zanes Drive, Plumas Lake, CA 95961-9090
Summary
Rio Del Oro Elementary is underperforming.
Reading and math results average to the 47th percentile among comparable California schools.
Only 41.1% of students met California's reading standard, and it is quickly trending down.
Math is weaker: 38.0% of students met California's math standard, it is holding steady.
Proficiency stats
| Current Reading Proficiency | 41.1% |
| Current Math Proficiency | 38.0% |
| Reading State Rank | 2,571/4,657 (45th percentile) |
| Math State Rank | 2,349/4,657 (50th percentile) |
School information
| Student / Teacher Ratio | 21:1 |
| Student enrollment (2024–25) | 564 |
| Low-Income Students | 247 (43.8%) |
| English Learners | 48 (8.5%) |
School Website
Great Schools
Niche
Ed-Data
CAASPP| Admissions | Open enrollment |
|---|---|
| Charter school | No |
| Magnet school | No |
Test score trends
Reading fell 15.0 points from last year and fell 11.2 points over the full period. Math fell 6.3 points from last year and fell 0.1 points over the full period.
•Math -0.1 percentage points (2024–2026)Reading Proficiency Scores
2026 state test results
Race and Ethnicity
Two or more races and Black or African American students have the strongest results.
Distribution of Scores by Grade
The share meeting the reading standard ranges from 39.5% to 43.4% across the grades shown. Overall, the school’s reading results rank No. 2,571 of 4,657 among California schools in the same grade-level category.
Low-Income vs Non-Low-Income
The 21.6-point reading income gap is slightly 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
3.3% of English learners meet the reading standard, compared with 44.8% of English-only students. The gap narrowed as English-learner results fell and English-only results fell.
•Math Proficiency Scores
2026 state test results
Race and Ethnicity
White students have the strongest math results at about 42% proficiency. The other reported groups range from about 33% to 38%.
Distribution of Scores by Grade
The share meeting the math standard ranges from 35.2% to 39.8% across the grades shown. Overall, the school’s math results rank No. 2,349 of 4,657 among California schools in the same grade-level category.
Low-Income vs Non-Low-Income
The 18.3-point math income gap is narrower 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
0.0% of English learners meet the math standard, compared with 41.8% of English-only students. The gap narrowed as English-learner results held steady and English-only results fell.
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 Oro Elementary compare within the district?
Rio Del Oro Elementary is No. 2 in both reading and math proficiency among the 2 K–5 schools in Plumas Lake Elementary with 2026 results.
Explore the district’s schoolsHow does Rio Del Oro Elementary rank in California?
Rio Del Oro Elementary ranks No. 2,571 of 4,657 in reading and No. 2,349 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 Oro Elementary compare within the district?
Low-income students here rank No. 2 in both subjects among 2 K–5 district schools with reportable 2026 results for this group. 31.2% meet the reading standard and 29.6% meet the math standard.
See results by student groupHow does Rio Del Oro Elementary compare with other schools in Plumas Lake?
Rio Del Oro Elementary is No. 2 in both reading and math proficiency among the 2 K–5 schools in Plumas Lake with 2026 results.
Explore schools in Plumas LakeHow does Rio Del Oro Elementary compare with other schools in Yuba County?
Rio Del Oro Elementary is No. 7 in both reading and math proficiency among the 11 K–5 schools in Yuba County with 2026 results.
Explore schools in Yuba CountyWhich schools should I compare?
Schools serving K–5 in the same district.
| School | Math | Reading |
|---|---|---|
| Rio Del Oro ElementaryThis school | 38.0% | 41.1% |
| Cobblestone Elementary | 43.2% | 48.4% |
