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Email BoardOster Elementary
1855 Lencar Way, San Jose, CA 95124-3603
Summary
Oster Elementary is a good school.
Reading and math results average to the 94th percentile among comparable California schools.
75.3% of students met California's reading standard, but it is trending down.
82.9% of students met California's math standard, which is excellent statewide and is trending up slightly.
Proficiency stats
| Current Reading Proficiency | 75.3% |
| Current Math Proficiency | 82.9% |
| Reading State Rank | 443/4,657 (91st percentile) |
| Math State Rank | 155/4,657 (97th percentile) |
School information
| Student / Teacher Ratio | 24:1 |
| Student enrollment (2024–25) | 627 |
| Low-Income Students | 81 (12.9%) |
| English Learners | 126 (20.1%) |
School Website
Great Schools
Niche
Ed-Data
CAASPP| Admissions | Open enrollment |
|---|---|
| Charter school | No |
| Magnet school | No |
Test score trends
Reading fell 1.4 points from last year and fell 4.2 points over the full period. Math rose 3.3 points from last year and rose 2.7 points over the full period.
•Math +2.7 percentage points (2024–2026)Reading Proficiency Scores
2026 state test results
Race and Ethnicity
Most students in every reported group meet the reading standard. Asian and Two or more races students have the strongest results.
Distribution of Scores by Grade
The share meeting the reading standard ranges from 68.4% to 78.6% across the grades shown. Overall, the school’s reading results rank in the top 10% among California schools in the same grade-level category.
Low-Income vs Non-Low-Income
The 38.8-point reading income gap is nearly twice as wide as the 19.8-point gap at a typical California K–5 school. It widened over the period shown.
•English Learners vs English Native
40.4% of English learners meet the reading standard, compared with 73.8% 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
Asian students have the strongest math results at about 91% proficiency. The other reported groups range from about 63% to 77%.
Distribution of Scores by Grade
The share meeting the math standard ranges from 81.1% to 85.4% across the grades shown. Overall, the school’s math results rank in the top 4% among California schools in the same grade-level category.
Low-Income vs Non-Low-Income
The 47.6-point math income gap is wider than the 20.0-point gap at a typical California K–5 school. It widened over the period shown.
•English Learners vs English Native
57.1% of English learners meet the math standard, compared with 81.9% 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 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 Oster Elementary compare within the district?
Oster Elementary is No. 5 in reading and No. 2 in math proficiency among the 6 K–5 schools in Union Elementary with 2026 results.
Explore the district’s schoolsHow does Oster Elementary rank in California?
Oster Elementary ranks No. 443 of 4,657 in reading and No. 155 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 Oster Elementary compare within the district?
Low-income students here rank No. 5 in reading and No. 4 in math among 6 K–5 district schools with reportable 2026 results for this group. 42.2% meet the reading standard and 42.5% meet the math standard.
See results by student groupHow does Oster Elementary compare with other schools in San Jose?
Oster Elementary is No. 12 in reading and No. 6 in math proficiency among the 75 K–5 schools in San Jose with 2026 results.
Explore schools in San JoseHow does Oster Elementary compare with other schools in Santa Clara County?
Oster Elementary is No. 42 in reading and No. 24 in math proficiency among the 153 K–5 schools in Santa Clara County with 2026 results.
Explore schools in Santa Clara CountyWhich schools should I compare?
Schools serving K–5 in the same district.
| School | Math | Reading |
|---|---|---|
| Oster ElementaryThis school | 82.9% | 75.3% |
| Carlton Elementary | 83.0% | 76.7% |
| Guadalupe Elementary | 81.0% | 82.9% |
