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Email BoardJoseph Widmer Jr. Elementary
751 Stonebridge Lane, Lathrop, CA 95330-8928
Summary
Joseph Widmer Jr. Elementary is badly underperforming.
Reading and math results average to the 24th percentile among comparable California schools.
Only 29.2% of students met California's reading standard, and it is trending down slightly.
Math is weaker: 17.2% of students met California's math standard, and it is trending down slightly.
Proficiency stats
| Current Reading Proficiency | 29.2% |
| Current Math Proficiency | 17.2% |
| Reading State Rank | 1,335/1,734 (23rd percentile) |
| Math State Rank | 1,312/1,735 (24th percentile) |
School information
| Student / Teacher Ratio | 25:1 |
| Student enrollment (2024–25) | 923 |
| Low-Income Students | 596 (64.6%) |
| English Learners | 228 (24.7%) |
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 2.3 points over the full period. Math fell 0.6 points from last year and fell 1.8 points over the full period.
•Math -1.8 percentage points (2024–2026)Reading Proficiency Scores
2026 state test results
Race and Ethnicity
Asian and Filipino students have the strongest results.
Distribution of Scores by Grade
The share meeting the reading standard ranges from 20.7% to 43.3% across the grades shown. Overall, the school’s reading results rank No. 1,335 of 1,734 among California schools in the same grade-level category.
Low-Income vs Non-Low-Income
The 18.6-point reading income gap is slightly wider than the 16.5-point gap at a typical California K–8 school. It widened slightly over the period shown.
•English Learners vs English Native
8.1% of English learners meet the reading standard, compared with 29.9% 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
Asian students have the strongest math results at about 32% proficiency. The other reported groups range from about 9% to 30%.
Distribution of Scores by Grade
The share meeting the math standard ranges from 11.9% to 23.1% across the grades shown. Overall, the school’s math results rank No. 1,312 of 1,735 among California schools in the same grade-level category.
Low-Income vs Non-Low-Income
The 12.7-point math income gap is narrower than the 15.5-point gap at a typical California K–8 school. It widened over the period shown.
•English Learners vs English Native
5.7% of English learners meet the math standard, compared with 16.0% 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 802 schools for reading and 801 for math. The comparison uses 2026 California K–8 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 Joseph Widmer Jr. Elementary compare within the district?
Joseph Widmer Jr. Elementary is No. 11 in both reading and math proficiency among the 20 K–8 schools in Manteca Unified with 2026 results.
Explore the district’s schoolsHow does Joseph Widmer Jr. Elementary rank in California?
Joseph Widmer Jr. Elementary ranks No. 1,335 of 1,734 in reading and No. 1,312 of 1,735 in math for 2026. These proficiency rankings compare California schools in the same grade-level category.
How do low-income students at Joseph Widmer Jr. Elementary compare within the district?
Low-income students here rank No. 13 in both subjects among 20 K–8 district schools with reportable 2026 results for this group. 23.3% meet the reading standard and 13.3% meet the math standard.
See results by student groupHow does Joseph Widmer Jr. Elementary compare with other schools in Lathrop?
Joseph Widmer Jr. Elementary is No. 5 in both reading and math proficiency among the 6 K–8 schools in Lathrop with 2026 results.
Explore schools in LathropHow does Joseph Widmer Jr. Elementary compare with other schools in San Joaquin County?
Joseph Widmer Jr. Elementary is No. 57 in reading and No. 66 in math proficiency among the 102 K–8 schools in San Joaquin County with 2026 results.
Explore schools in San Joaquin CountyWhich schools should I compare?
Schools serving K–8 in the same district.
| School | Math | Reading |
|---|---|---|
| Joseph Widmer Jr. ElementaryThis school | 17.2% | 29.2% |
| Lathrop Elementary | 11.8% | 26.0% |
| Mossdale Elementary | 27.3% | 36.7% |
