Is this your school? Email the board to prioritize reading!
Email BoardWalter Zimmerman Elementary
11050 Linden Avenue, Bloomington, CA 92316-3118
Summary
Walter Zimmerman Elementary is badly underperforming.
Reading and math results average to the 16th percentile among comparable California schools.
Only 30.5% of students met California's reading standard, and it is slowly trending down.
Math is weaker: 16.9% of students met California's math standard, and it is trending down slightly.
Proficiency stats
| Current Reading Proficiency | 30.5% |
| Current Math Proficiency | 16.9% |
| Reading State Rank | 3,582/4,657 (23rd percentile) |
| Math State Rank | 4,211/4,657 (10th percentile) |
School information
| Student / Teacher Ratio | 21:1 |
| Student enrollment (2024–25) | 512 |
| Low-Income Students | 476 (93.0%) |
| English Learners | 155 (30.3%) |
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 4.4 points over the full period. Math fell 1.4 points from last year and fell 1.7 points over the full period.
•Math -1.7 percentage points (2024–2026)Reading Proficiency Scores
2026 state test results
Race and Ethnicity
Only one group has a reportable reading result.
Distribution of Scores by Grade
The share meeting the reading standard ranges from 20.8% to 35.3% across the grades shown. Overall, the school’s reading results rank No. 3,582 of 4,657 among California schools in the same grade-level category.
Low-Income vs Non-Low-Income
Results for both income groups are unavailable, so a current reading gap cannot be calculated.
•
English Learners vs English Native
4.6% of English learners meet the reading standard, compared with 31.5% 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
Only one group has a reportable math result.
Distribution of Scores by Grade
The share meeting the math standard ranges from 11.8% to 22.1% across the grades shown. Overall, the school’s math results rank No. 4,211 of 4,657 among California schools in the same grade-level category.
Low-Income vs Non-Low-Income
Results for both income groups are unavailable, so a current math gap cannot be calculated.
•English Learners vs English Native
3.5% of English learners meet the math standard, compared with 15.1% of English-only students. The gap narrowed as English-learner results fell and English-only results fell.
•Progress as students move up
2023–2026
How we compare income gaps
“Typical” means the median gap across 1,479 schools for reading and 1,483 for math. The comparison uses 2026 California K–6 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 Walter Zimmerman Elementary compare within the district?
Walter Zimmerman Elementary is No. 12 in reading and No. 15 in math proficiency among the 18 K–6 schools in Colton Joint Unified with 2026 results.
Explore the district’s schoolsHow does Walter Zimmerman Elementary rank in California?
Walter Zimmerman Elementary ranks No. 3,582 of 4,657 in reading and No. 4,211 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 Walter Zimmerman Elementary compare within the district?
Low-income students here rank No. 13 in reading and No. 15 in math among 18 K–6 district schools with reportable 2026 results for this group. 29.8% meet the reading standard and 16.7% meet the math standard.
See results by student groupHow does Walter Zimmerman Elementary compare with other schools in Bloomington?
Walter Zimmerman Elementary is No. 5 in both reading and math proficiency among the 5 K–6 schools in Bloomington with 2026 results.
Explore schools in BloomingtonHow does Walter Zimmerman Elementary compare with other schools in San Bernardino County?
Walter Zimmerman Elementary is No. 140 in reading and tied for No. 159 in math proficiency among the 187 K–6 schools in San Bernardino County with 2026 results.
Explore schools in San Bernardino CountyWhich schools should I compare?
Schools serving K–6 in the same district.
| School | Math | Reading |
|---|---|---|
| Walter Zimmerman ElementaryThis school | 16.9% | 30.5% |
| Crestmore Elementary | 28.7% | 42.1% |
| Gerald A. Smith Elementary | 31.2% | 39.1% |
