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#7617 of 9,533 schools in CA

Delta Charter Online

School · New Jerusalem Elementary

31400 South Koster Rd., Lathrop, CA 95330

Charter

Enrollment

228

Student-Teacher

28.5:1

Score

5.0

Grades

Kindergarten – 12th

Updated 2022-23

How this school compares

In Lathrop

#5 of 5

public schools

California schools

#346 of 475

In district

#4 of 5

New Jerusalem Elementary

Academic growth

7.4 / 10

Strong

About Delta Charter Online

Delta Charter Online is a charter school located in Lathrop, California, offering education from kindergarten through twelfth grade. With an enrollment of 228 students and a student-teacher ratio of 28.5:1, Delta Charter Online provides personalized attention within its rural setting near the town. The school has eight full-time equivalent teachers dedicated to supporting students across all grade levels.

Delta Charter Online focuses on providing a charter school experience that aims to cater to diverse learning needs in a small community environment. While the MySchoolScout rating of 3.6 out of 10 and state ranking of #7673 indicate there is room for academic growth, Delta Charter Online continues to prioritize student development and engagement. On average, about 40% of students are proficient or above in ELA/reading, while only 14% meet proficiency standards in math.

Delta Charter Online serves a community situated in a rural area near Lathrop, fostering a close-knit environment where families know each other well.

What Parents Should Know

While current test scores at Delta Charter Online are below average, the school shows strong growth metrics — meaning students are making above-average progress year over year. This upward trajectory can be a positive indicator for families who value a school's ability to help students improve, even if absolute scores haven't caught up yet.

The student-teacher ratio at Delta Charter Online is 28.5:1, which is higher than the national average. This may mean larger class sizes, so parents should ask about classroom support, teaching assistants, and how the school differentiates instruction for students who need extra help.

Delta Charter Online 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.

Score Breakdown

Full Profile · 4/4 metrics
Student Progress7.4Very Good25%
Year-over-year improvement in student test scores.
View breakdown
Years of Data3
Annual Change-0.36 pts/yr
Data Period2019–2024
TrendStable
Academics3.6Fair25%
Student proficiency on state tests, adjusted for community poverty levels.
View breakdown
Math Proficiency16.2%
Reading/ELA Proficiency31.3%
Math vs. State Avg-11.8 pts
Reading vs. State Avg-24.6 pts
Overall Proficiency24%
Expected (poverty-adj.)45%
vs. Expected-20.9 pts
Adjusted Percentile17th
College Readiness6.5Above Average30%
Graduation rates, AP course participation, and IB availability.
View breakdown
IB ProgramNo
Resources & Environment1.7Significantly Below Average20%
Student-teacher ratio, per-pupil spending, and attendance.
View breakdown
Student-Teacher Ratio28.5:1
Per-Pupil Spending$12,454

Delta Charter Online — Students at Delta Charter Online score 24% proficient, which is below what's typical for similar communities (expected: 45%).

How we calculate scores →

Equity & Diversity

Shown separately, not included in overall score

Free/Reduced Lunch

53.5%

Students qualifying for federal meal assistance

Test Scores CA CAASPP (2023-24)

Math Proficiency 13.6%
School
State
31.8%
ELA Proficiency 39.8%
School
State
51.5%

Based on 8 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
5%
ELA
44.5%
2021*
Math
17%
ELA
52%
2024
Math
16.2%
ELA
31.3%

* 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: 7.4/10.

How Delta Charter Online Compares

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

Overall Score
5.0/10
20th percentile in CA
Academic
3.6/10
3.6/10
Growth
7.4/10
Above average
Environment
1.7/10
Below average

Funding & Resources

Free/Reduced Lunch
Students eligible for subsidized meals
54%
Teaching Staff
29:1 student-teacher ratio
8 teachers

Location

31400 South Koster Rd., Lathrop, CA 95330

Nearby Alternatives

Families considering Delta Charter Online may also want to explore other schools in the area. Delta Charter (rated 7.1/10, in nearby Tracy), which scores notably higher. Another option is Valley View Charter Prep (rated 6.9/10, in nearby Sacramento), which scores notably higher. Additionally, Delta Keys Charter (rated 6.2/10), which scores notably higher. For more schools in Lathrop, see our Lathrop 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
Delta Charter Tracy 0.0 mi 7.1
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
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 95330 (ACS 2019-2023 5-Year Estimates) · Data sources

Median Income

$118,461

Median Home Value

$605,100

Median Rent

$2,341/mo

Population

33,015

College Educated

23.9%

Homeownership

83.6%

Avg Commute

43.6 min

Poverty Rate

8.5%

Median Age

34.2

Community Profile

The community surrounding Delta Charter Online has a median household income of $118,461. It is a community where 24% of adults hold a bachelor's degree or higher. The median home value in the area is $605,100, with a median rent of $2,341/month. The local poverty rate of 8.5% is relatively low. The average commute in the area is 44 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
CALEXICO MISSION SCHOOL Calexico, CA 5.0
Mountain Valley Academy Ramona, CA 5.0
TRINITY CHRISTIAN SCHOOL Sacramento, CA 5.0
eCademy Charter at Crane Turlock, CA 5.0
California School for the Deaf-Fremont Fremont, CA 5.1
Parkview Placentia, CA 4.9

Frequently Asked Questions

Common questions about Delta Charter Online

What grades does Delta Charter Online serve?

Delta Charter Online serves students in grades Kindergarten through 12th.

How many students attend Delta Charter Online?

Delta Charter Online has an enrollment of approximately 228 students.

What is the student-teacher ratio at Delta Charter Online?

The student-teacher ratio at Delta Charter Online is 28.5:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.

How does Delta Charter Online rank in CA?

Delta Charter Online is ranked #7617 out of 9,533 schools in CA.

What is Delta Charter Online's MySchoolScout rating?

Delta Charter Online has a composite rating of 5.0 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 Online?

Based on the most recent state assessment data, Delta Charter Online has 13.6% math proficiency and 39.8% reading/ELA proficiency.

Is Delta Charter Online a charter school?

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

Is Delta Charter Online a Title I school?

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

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

53.5% of students at Delta Charter Online 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

City Safety
High (1,741/100K)

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

Quick Facts NCES CCD (SY 2022-23)

Grades
Kindergarten – 12th
Enrollment
228
Student-Teacher Ratio
28.5:1
Teachers (FTE)
8
Free/Reduced Lunch
53.5%
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
#4 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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