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Very Good

#3130 of 9,533 schools in CA

Top 33% in state

Delta Charter

School · New Jerusalem Elementary

31400 South Koster Rd., Tracy, CA 95304

Charter

Enrollment

811

Student-Teacher

16.6:1

Score

7.1

Grades

Kindergarten – 12th

Updated 2022-23

How this school compares

In Tracy

#7 of 31

public schools

California schools

#57 of 475

In district

#1 of 5

New Jerusalem Elementary

Academic growth

9.2 / 10

Exceptional

About Delta Charter

Delta Charter is a charter school serving kindergarten through 12th grade in Tracy, California, with 811 students and 49 full-time equivalent teachers, creating a student-teacher ratio of about 17 to 1. Located on South Koster Road in a rural area near town, the school operates as a regular public school within San Joaquin County's educational landscape. Academically, Delta Charter is working to strengthen student achievement in core subjects.

Currently, 39% of students are performing at proficient levels or above in English language arts and reading across grade levels, while math proficiency sits at 24% or above. These figures indicate an area where the school is focusing its efforts on student development and academic growth. The school's MySchoolScout rating of 5.9 out of 10 reflects these academic challenges, with a state ranking around the 58th percentile among California schools.

The charter school model allows Delta Charter flexibility in its educational approach as it serves families throughout the region. With enrollment spanning from early elementary through high school, the school manages the complex task of supporting student learning across a wide developmental range. The rural setting near Tracy provides a quieter community environment for students and families seeking an alternative educational pathway through the charter school system.

What Parents Should Know

Delta Charter is a charter school — a publicly funded school that operates with more autonomy than traditional district schools. Charter schools often have distinct educational models or specialties. Parents should understand the school's specific mission, enrollment process, and how its approach differs from nearby district options.

Located in a rural area, Delta Charter may involve longer commutes for some families. Rural schools often serve as community anchors and may have smaller class sizes, but parents should consider transportation logistics, after-school program availability, and access to specialized services.

Score Breakdown

Full Profile · 4/4 metrics
Student Progress9.2Exceptional25%
Year-over-year improvement in student test scores.
View breakdown
Years of Data3
Annual Change+0.84 pts/yr
Data Period2019–2024
TrendStable
Academics5.0Average25%
Student proficiency on state tests, adjusted for community poverty levels.
View breakdown
Math Proficiency24.3%
Reading/ELA Proficiency40.3%
Math vs. State Avg-21.4 pts
Reading vs. State Avg-2.5 pts
Overall Proficiency32%
Expected (poverty-adj.)46%
vs. Expected-13.5 pts
Adjusted Percentile32th
College Readiness6.5Above Average30%
Graduation rates, AP course participation, and IB availability.
View breakdown
IB ProgramNo
Resources & Environment8.2Excellent20%
Student-teacher ratio, per-pupil spending, and attendance.
View breakdown
Student-Teacher Ratio16.6:1
Per-Pupil Spending$12,454

Delta Charter — Students at Delta Charter score 32% proficient, which is below what's typical for similar communities (expected: 46%).

How we calculate scores →

Equity & Diversity

Shown separately, not included in overall score

Free/Reduced Lunch

51.4%

Students qualifying for federal meal assistance

Test Scores CA CAASPP (2023-24)

Math Proficiency 24.5%
School
State
35.7%
ELA Proficiency 38.6%
School
State
47.1%

Based on 20 test records from CA state assessments. About our data

Proficiency Trend

→ Stable

Average proficiency (% at or above grade level) across Math & ELA over time.

2019
Math
23%
ELA
34%
2021*
Math
21%
ELA
33%
2024
Math
25.1%
ELA
39.9%

* COVID-affected year — test participation was uneven nationwide. This data is weighted at 50% in the Growth score calculation.

Source: EdFacts (NCES) and state assessment data. Growth score: 9.2/10.

How Delta Charter Compares

See how Delta Charter performs across key quality dimensions compared to state benchmarks.

Overall Score
7.1/10
67th percentile in CA
Academic
5.0/10
5.0/10
Growth
9.2/10
Above average
Environment
8.2/10
Above average

Funding & Resources

Free/Reduced Lunch
Students eligible for subsidized meals
51%
Teaching Staff
17:1 student-teacher ratio
49 teachers

Location

31400 South Koster Rd., Tracy, CA 95304

Nearby Alternatives

Families considering Delta Charter may also want to explore other schools in the area. Valley View Charter Prep (rated 6.9/10, in nearby Sacramento), with a very similar rating. Another option is Delta Keys Charter (rated 6.2/10, in nearby Lathrop), with a comparable rating. Additionally, Delta Home Charter (rated 5.7/10), a more accessible option. For more schools in Tracy, see our Tracy schools guide .

Nearby Schools

20 within 7.3 mi
School Distance Rating
Valley View Charter Prep Sacramento 0.0 mi 6.9
New Jerusalem Elementary Tracy 0.0 mi
New Jerusalem Tracy 0.0 mi 4.1
Delta Home Charter Tracy 0.0 mi 5.7
Delta Keys Charter Lathrop 0.0 mi 6.2
Delta Charter Online Lathrop 0.0 mi 5.0
Rising Sun Patterson 4.4 mi
Jefferson Tracy 4.4 mi 8.0
Tom Hawkins Elementary Tracy 5.8 mi 6.8
Banta Charter Tracy 6.7 mi 3.5
Banta Elementary Tracy 6.7 mi 5.5
MONTESSORI ELEMENTARY & MIDDLE SCHOOL OF TRACY Tracy 6.1 mi 7.1
Louis A. Bohn Elementary Tracy 6.7 mi 7.4
Gladys Poet-Christian Elementary Tracy 6.7 mi 4.0
Grace Mennonite School Winton 7.0 mi
Tracy High Tracy 7.3 mi 6.1
Monticello Elementary Tracy 6.9 mi 7.3
Nile Garden Elementary Manteca 7.6 mi 4.7
Anthony C. Traina Elementary Tracy 6.8 mi 6.7
South/West Park Elementary Tracy 7.3 mi 8.2

Neighborhood Census ACS (2019-2023)

Census data for ZIP 95304 (ACS 2019-2023 5-Year Estimates) · Data sources

Median Income

$114,359

Median Home Value

$869,300

Median Rent

$2,299/mo

Population

14,818

College Educated

28.5%

Homeownership

63.5%

Avg Commute

35.4 min

Poverty Rate

5.6%

Median Age

38.1

Community Profile

The community surrounding Delta Charter has a median household income of $114,359. It is an area where 29% of adults hold a bachelor's degree or higher. The median home value in the area is $869,300, with a median rent of $2,299/month. The local poverty rate of 5.6% is relatively low. The average commute in the area is 35 minutes, which is above the national average. Source: U.S. Census ACS 2022 5-Year Estimates.

Similar Schools

Schools in the same state with comparable level, size, and ratings

School Rating
CORNERSTONE CHRISTIAN SCHOOL Antioch, CA 7.1
Magnolia Science Academy Santa Ana Santa Ana, CA 7.1
Orcutt Academy Charter Orcutt, CA 7.1
Palmdale Academy Charter Palmdale, CA 7.1
Valley Oaks Charter Bakersfield, CA 7.0
CORE Butte Charter Chico, CA 7.2

Frequently Asked Questions

Common questions about Delta Charter

What grades does Delta Charter serve?

Delta Charter serves students in grades Kindergarten through 12th.

How many students attend Delta Charter?

Delta Charter has an enrollment of approximately 811 students.

What is the student-teacher ratio at Delta Charter?

The student-teacher ratio at Delta Charter is 16.6:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.

How does Delta Charter rank in CA?

Delta Charter is ranked #3130 out of 9,533 schools in CA.

What is Delta Charter's MySchoolScout rating?

Delta Charter has a composite rating of 7.1 out of 10 on MySchoolScout. This score combines academic performance, student growth, and school environment into a single score. Equity data is shown separately for context.

What are the test scores at Delta Charter?

Based on the most recent state assessment data, Delta Charter has 24.5% math proficiency and 38.6% reading/ELA proficiency.

Is Delta Charter a charter school?

Yes, Delta Charter is a charter school. Charter schools are publicly funded but independently operated, often with more flexibility in curriculum and teaching methods.

Is Delta Charter a Title I school?

No, Delta Charter is not currently a Title I school.

What does the Free & Reduced Lunch percentage mean for Delta Charter?

51.4% of students at Delta Charter qualify for free or reduced-price lunch. This is a commonly used indicator of economic need and provides important context when interpreting test scores.

11 schools nearby View map →

Neighborhood Context

Walk Score
4 Car-Dependent
Bike Score
29 Somewhat Bikeable
City Safety
High (1,901/100K)

Powered by Walk Score

FBI UCR 2024. City-level (Tracy). Data >1 year old.

Quick Facts NCES CCD (SY 2022-23)

Grades
Kindergarten – 12th
Enrollment
811
Student-Teacher Ratio
16.6:1
Teachers (FTE)
49
Free/Reduced Lunch
51.4%
Type
regular
Setting
Fringe Rural
County
San Joaquin County
Data Year
2023–2024

District

New Jerusalem Elementary
District Enrollment
1,643
Schools in District
6
Per-Pupil Spending
$16,186
District Rank
#1 of 5

How We Rate Schools

Every school receives a composite score from 1 to 10 based on four pillars: Academic Performance (50%), Student Growth (20%), Equity (15%), and Learning Environment (15%). Scores are built from publicly available data including standardized test results, enrollment figures, and school climate indicators.

Read our full methodology

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