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Email BoardDelta Charter
31400 South Koster Road, Tracy, CA 95304-8824
Summary
Delta Charter is badly underperforming.
Reading and math results average to the 40th percentile among comparable California schools.
Only 34.9% of students met California's reading standard, and it is trending down.
Math is weaker: 29.4% of students met California's math standard, but it is trending up.
Proficiency stats
| Current Reading Proficiency | 34.9% |
| Current Math Proficiency | 29.4% |
| Reading State Rank | 1,176/1,734 (32nd percentile) |
| Math State Rank | 896/1,735 (48th percentile) |
School information
| Student / Teacher Ratio | 15:1 |
| Student enrollment (2024–25) | 772 |
| Low-Income Students | 488 (63.2%) |
| English Learners | 79 (10.2%) |
School Website
Great Schools
Niche
Ed-Data
CAASPP| Admissions | Open enrollment |
|---|---|
| Charter school | Yes |
| Magnet school | No |
Test score trends
Reading rose 3.5 points from last year and fell 5.4 points over the full period. Math rose 3.4 points from last year and rose 5.1 points over the full period.
•Math +5.1 percentage points (2024–2026)Reading Proficiency Scores
2026 state test results
Race and Ethnicity
Two or more races and White students have the strongest results.
Distribution of Scores by Grade
The share meeting the reading standard ranges from 25.5% to 40.0% across the grades shown. Overall, the school’s reading results rank No. 1,176 of 1,734 among California schools in the same grade-level category.
Low-Income vs Non-Low-Income
The 11.9-point reading income gap is about the same as the 11.6-point gap at a typical California K–12 school. It narrowed slightly over the period shown.
•English Learners vs English Native
3.0% of English learners meet the reading standard, compared with 37.3% 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
Two or more races students have the strongest math results at about 38% proficiency. The other reported groups range from about 12% to 33%.
Distribution of Scores by Grade
The share meeting the math standard ranges from 22.2% to 40.0% across the grades shown. Overall, the school’s math results rank No. 896 of 1,735 among California schools in the same grade-level category.
Low-Income vs Non-Low-Income
The 4.2-point math income gap is narrower than the 10.8-point gap at a typical California K–12 school. It narrowed over the period shown.
•English Learners vs English Native
6.5% of English learners meet the math standard, compared with 30.5% of English-only students. The gap widened 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 249 schools for reading and 251 for math. The comparison uses 2026 California K–12 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 Delta Charter compare within the district?
Delta Charter is No. 3 in reading and No. 2 in math proficiency among the 3 K–12 schools in New Jerusalem Elementary with 2026 results.
Explore the district’s schoolsHow does Delta Charter rank in California?
Delta Charter ranks No. 1,176 of 1,734 in reading and No. 896 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 Delta Charter compare within the district?
Low-income students here rank No. 3 in reading and No. 2 in math among 3 K–12 district schools with reportable 2026 results for this group. 30.3% meet the reading standard and 27.8% meet the math standard.
See results by student groupHow does Delta Charter compare with other schools in Tracy?
Delta Charter is No. 2 in both reading and math proficiency among the 2 K–12 schools in Tracy with 2026 results.
Explore schools in TracyHow does Delta Charter compare with other schools in San Joaquin County?
Delta Charter is No. 7 in reading and No. 5 in math proficiency among the 7 K–12 schools in San Joaquin County with 2026 results.
Explore schools in San Joaquin CountyWhich schools should I compare?
Schools serving K–12 in the same district.
| School | Math | Reading |
|---|---|---|
| Delta CharterThis school | 29.4% | 34.9% |
| Valley View Charter Prep | 59.9% | 74.1% |
| ABLE Charter | 22.1% | 39.1% |
