Skip to main content

Very Good

#3527 of 9,539 schools in CA

Top 37% in state

Delta Charter Online

School · New Jerusalem Elementary

31400 South Koster Rd., Lathrop, CA 95330

Charter

Enrollment

228

Student-Teacher

28.5:1

Score

7.0

Grades

Kindergarten – 12th

Data vintage2022-23

How this school compares

California schools

#3,527 of 9,539

In Lathrop

#3 of 5

public schools

In district

#2 of 5

New Jerusalem Elementary

Academic growth

9.5 / 10

Excellent

School shortlistprofile + nearby

Shortlisting around Delta Charter Online?

Use this profile as one decision point, then compare nearby options, source confidence, and commute fit before picking a neighborhood around it.

Shortlist starter

Start with these real page-level signals, then use the full table and map below.

Delta Charter Online

7.0/10

School in Lathrop · grades Kindergarten – 12th. Start here, then compare fit against nearby and district options.

Valley View Charter Prep

7.8/10

0.0 mi away. Use as a geographic alternative in the same move search.

New Jerusalem Elementary

Nearby

0.0 mi away. Use as a geographic alternative in the same move search.

About Delta Charter Online

Delta Charter Online is a public school in Lathrop, CA, part of New Jerusalem Elementary. Delta Charter Online serves approximately 228 students, and covers grades Kindergarten-12th, and has a 28.5:1 student-teacher ratio. Delta Charter Online has a current MySchoolScout rating of 7.0 out of 10 and ranks #3,527 of 9,539 schools in CA.

Structured state assessment records for Delta Charter Online show 13% math proficiency (multi-year average, 2017-2024) and 41% reading/ELA proficiency (multi-year average, 2017-2024).

How it compares1.1 pts above district
  • This school 7.0 · Very Good
  • District avg 5.9
  • CA avg 6.3

What Parents Should Know

Test scores at Delta Charter Online sit below average, but its growth scores are strong: students here make above-average progress year over year. The raw numbers haven't caught up, but a school that keeps moving kids forward is doing the harder, more important work.

Delta Charter Online runs 28.5:1 students to teachers, above the national average. That often means bigger classes. Ask how the school supports kids who need extra help, and whether there are teaching assistants or small-group time.

Delta Charter Online is a charter school: publicly funded, but run with more independence than a traditional district school. Many charters are built around a specific model or focus, so it's worth understanding this one's mission, how enrollment works, and how it differs from the district schools nearby.

Score Breakdown

Full Profile · 4/4 metrics
Student Progress9.5Excellent25%
Year-over-year improvement in student test scores.
View breakdown
Years of Data6
Annual Change+0.14 pts/yr
Data Period2017–2024
TrendStable
Academics3.6Needs Improvement25%
Student proficiency on state tests, adjusted for community poverty levels.
View breakdown
Math Proficiency16.2% (2024 CAASPP)
Reading/ELA Proficiency31.3% (2024 CAASPP)
Math vs. State Avg-11.8 pts
Reading vs. State Avg-24.6 pts
Overall Proficiency24% (2024 CAASPP, Math+ELA)
Expected (poverty-adj.)44% (model expectation from 2024 CAASPP)
vs. Expected-20.5 pts
Adjusted Percentile17th
College Readiness9.0Excellent30%
Graduation rates, AP course participation, and IB availability.
View breakdown
4-Year Graduation Rate82%
IB ProgramNo
Resources & Environment4.9Below Average20%
Student-teacher ratio, per-pupil spending, and attendance.
View breakdown
Student-Teacher Ratio28.5:1
Per-Pupil Spending$16,186
Chronic Absenteeism4.8%

Delta Charter Online — Students at Delta Charter Online score 24% proficient, which is below what's typical for similar communities (expected: 44%).

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 13.3% (multi-year average, 2017-2024)
School
State
31.8% (2024 CAASPP)
ELA Proficiency 41.1% (multi-year average, 2017-2024)
School
State
51.5% (2024 CAASPP)

Based on 14 test records from CA state assessments. About our data

Proficiency Trend

→ Stable

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

2017
Math
17%
ELA
32%
2018
Math
5%
ELA
44.5%
2019
Math
5%
ELA
44.5%
2020*
Math
17%
ELA
52%
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: 9.5/10.

How Delta Charter Online Compares

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

Overall Score
7.0/10
63th percentile in CA
Academic
3.6/10
Needs Improvement
Growth
9.5/10
Excellent
Environment
4.9/10
Below Average
Advanced STEM
2/5
Subjects offered

Funding & Resources

Free/Reduced Lunch
Students eligible for subsidized meals
54%
Teaching Staff
29:1 student-teacher ratio
8 teachers
Chronic Absenteeism
Students missing 15+ days per year (SY 2022-23)
4.8%

Programs & Offerings

Advanced STEM Courses2 of 5 advanced subjects offered
Algebra II, Advanced Math, Calculus, Chemistry, Physics·CRDC 2021-22

Data as of 2021-22 · Source: CRDC via Urban Institute · Learn more

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 7.9/10, in nearby Tracy), which scores slightly higher. Another option is Valley View Charter Prep (rated 7.8/10, in nearby Sacramento), which scores slightly higher. Additionally, Delta Keys Charter (rated 6.5/10), with a comparable rating. 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 7.8
New Jerusalem Elementary Tracy 0.0 mi
Delta Charter Tracy 0.0 mi 7.9
New Jerusalem Tracy 0.0 mi 2.6
Delta Home Charter Tracy 0.0 mi 5.3
Delta Keys Charter Lathrop 0.0 mi 6.5
Rising Sun Patterson 4.4 mi
Jefferson Tracy 4.4 mi 8.3
Tom Hawkins Elementary Tracy 5.8 mi 5.4
Banta Charter Tracy 6.7 mi 4.3
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 4.5
Gladys Poet-Christian Elementary Tracy 6.7 mi 6.3
Grace Mennonite School Winton 7.0 mi
Tracy High Tracy 7.3 mi 5.5
Monticello Elementary Tracy 6.9 mi 7.1
Nile Garden Elementary Manteca 7.6 mi 6.7
Anthony C. Traina Elementary Tracy 6.8 mi 5.6
South/West Park Elementary Tracy 7.3 mi 5.8

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

Similar Schools

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

School Rating
CALVARY BAPTIST SCHOOLS La Verne, CA 7.0
CALVARY CHAPEL CHRISTIAN SCHOOL Moreno Valley, CA 7.0
CORNERSTONE CHRISTIAN SCHOOL Wildomar, CA 7.0
Method Schools LA Murrieta, CA 7.0
Mountain Valley Academy Ramona, CA 7.0
NAPA CHRISTIAN CAMPUS OF EDUCATION Napa, CA 7.0

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 ranks #3,527 of 9,539 schools in CA.

What is Delta Charter Online's MySchoolScout rating?

Delta Charter Online has a current MySchoolScout rating of 7.0 out of 10. This score combines the level-appropriate components shown in the rating breakdown; equity data is shown separately for context.

What are the test scores at Delta Charter Online?

Based on loaded state assessment records, Delta Charter Online has 13% math proficiency (multi-year average, 2017-2024) and 41% reading/ELA proficiency (multi-year average, 2017-2024).

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

Walk Score
4 Car-Dependent
Bike Score
29 Somewhat Bikeable

Powered by Walk Score

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
Chronic Absenteeism (SY 2022-23)
4.8%
4-Year Graduation
82.0%

District

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

How we rate schools

A clear 1–10 score built from public data — growth, academics, and learning environment. No hidden criteria, no pay-to-play.

See how we rate

Related reading

Get school insights in your inbox

New rankings, best-schools lists, and parent guides — delivered free. No spam, unsubscribe anytime.

We respect your privacy. Unsubscribe at any time.