Is this your school? Email the board to prioritize reading!
Email BoardBrewer Island Elementary
1151 Polynesia Drive, Foster City, CA 94404-1749
Summary
Brewer Island Elementary is a good school.
Reading and math results average to the 91st percentile among comparable California schools.
73.6% of students met California's reading standard, but it is trending down.
77.2% of students met California's math standard, which is strong statewide and is trending up slightly.
Proficiency stats
| Current Reading Proficiency | 73.6% |
| Current Math Proficiency | 77.2% |
| Reading State Rank | 517/4,657 (89th percentile) |
| Math State Rank | 328/4,657 (93rd percentile) |
School information
| Student / Teacher Ratio | 19:1 |
| Student enrollment (2024–25) | 306 |
| Low-Income Students | 59 (19.3%) |
| English Learners | 59 (19.3%) |
School Website
Great Schools
Niche
Ed-Data
CAASPP| Admissions | Open enrollment |
|---|---|
| Charter school | No |
| Magnet school | No |
Test score trends
Reading rose 2.8 points from last year and fell 3.6 points over the full period. Math rose 1.9 points from last year and rose 0.7 points over the full period.
•Math +0.7 percentage points (2024–2026)Reading Proficiency Scores
2026 state test results
Race and Ethnicity
Most students in every reported group meet the reading standard. White and Two or more races students have the strongest results.
Distribution of Scores by Grade
The share meeting the reading standard ranges from 70.5% to 75.0% across the grades shown. Overall, the school’s reading results rank in the top 12% among California schools in the same grade-level category.
Low-Income vs Non-Low-Income
The 23.6-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
33.3% of English learners meet the reading standard, compared with 73.2% of English-only students. The gap widened 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 85% proficiency. The other reported groups range from about 55% to 84%.
Distribution of Scores by Grade
The share meeting the math standard ranges from 71.7% to 85.0% across the grades shown. Overall, the school’s math results rank in the top 8% among California schools in the same grade-level category.
Low-Income vs Non-Low-Income
The 25.0-point math income gap is slightly 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
47.4% of English learners meet the math standard, compared with 74.7% of English-only students. The gap narrowed as English-learner results rose 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 Brewer Island Elementary compare within the district?
Brewer Island Elementary is No. 2 in both reading and math proficiency among the 13 K–5 schools in San Mateo-Foster City with 2026 results.
Explore the district’s schoolsHow does Brewer Island Elementary rank in California?
Brewer Island Elementary ranks No. 517 of 4,657 in reading and No. 328 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 Brewer Island Elementary compare within the district?
Low-income students here rank No. 3 in both subjects among 13 K–5 district schools with reportable 2026 results for this group. 56.4% meet the reading standard and 59.0% meet the math standard.
See results by student groupHow does Brewer Island Elementary compare with other schools in Foster City?
Brewer Island Elementary is No. 1 in both reading and math proficiency among the 4 K–5 schools in Foster City with 2026 results.
Explore schools in Foster CityHow does Brewer Island Elementary compare with other schools in San Mateo County?
Brewer Island Elementary is No. 16 in reading and No. 12 in math proficiency among the 70 K–5 schools in San Mateo County with 2026 results.
Explore schools in San Mateo CountyWhich schools should I compare?
Schools serving K–5 in the same district.
| School | Math | Reading |
|---|---|---|
| Brewer Island ElementaryThis school | 77.2% | 73.6% |
| Audubon Elementary | 73.0% | 69.2% |
| Beach Park Elementary | 74.1% | 72.8% |
