Average
#4551 of 9,539 schools in CA
Top 48% in state
Delta Keys Charter
School · New Jerusalem Elementary
31400 South Koster Rd., Lathrop, CA 95330
Enrollment
125
Student-Teacher
20.8:1
Score
6.5
Grades
Kindergarten – 12th
Enrollment
125
Student-Teacher
20.8:1
Score
6.5
Grades
Kindergarten – 12th
Data vintage
2022-23
Data vintage2022-23
How this school compares
California schools
#4,551 of 9,539
In Lathrop
#5 of 5
public schools
In district
#3 of 5
New Jerusalem Elementary
Academic growth
9.8 / 10
Excellent
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Delta Keys Charter
School in Lathrop · grades Kindergarten – 12th. Start here, then compare fit against nearby and district options.
Valley View Charter Prep
0.0 mi away. Use as a geographic alternative in the same move search.
New Jerusalem Elementary
0.0 mi away. Use as a geographic alternative in the same move search.
About Delta Keys Charter
Delta Keys Charter is a public school in Lathrop, CA, part of New Jerusalem Elementary. Delta Keys Charter serves approximately 125 students, and covers grades Kindergarten-12th, and has a 20.8:1 student-teacher ratio. Delta Keys Charter has a current MySchoolScout rating of 6.5 out of 10 and ranks #4,551 of 9,539 schools in CA.
Structured state assessment records for Delta Keys Charter show 6% math proficiency (multi-year average, 2017-2024) and 14% reading/ELA proficiency (multi-year average, 2017-2024).
- This school 6.5 · Average
- District avg 5.9
- CA avg 6.3
What Parents Should Know
At 125 students, Delta Keys Charter is on the smaller side. That usually buys more individual attention and teachers who know every kid by name, with the trade-off of fewer electives and extracurriculars than a larger school can staff. Ask what activities it actually offers.
Test scores at Delta Keys Charter 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 Keys Charter runs 20.8:1 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.
Score Breakdown
Full Profile · 4/4 metricsView breakdown
View breakdown
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Delta Keys Charter — Students at Delta Keys Charter score 14% proficient, which is below what's typical for similar communities (expected: 32%).
Equity & Diversity
Shown separately, not included in overall scoreFree/Reduced Lunch
76%
Students qualifying for federal meal assistance
Test Scores CA CAASPP (2023-24)
Based on 14 test records from CA state assessments. About our data
Proficiency Trend
→ StableAverage proficiency (% at or above grade level) across Math & ELA over time.
* 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: 9.8/10.
How Delta Keys Charter Compares
See how Delta Keys Charter performs across key quality dimensions compared to state benchmarks.
Funding & Resources
Location
31400 South Koster Rd., Lathrop, CA 95330
Nearby Alternatives
Families considering Delta Keys Charter may also want to explore other schools in the area. Delta Charter (rated 7.9/10, in nearby Tracy), which scores notably higher. Another option is Valley View Charter Prep (rated 7.8/10, in nearby Sacramento), which scores notably higher. Additionally, Delta Charter Online (rated 7.0/10), which scores slightly 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 | 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 Charter Online Lathrop | 0.0 mi | 7.0 |
| 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 |
|---|---|
| MUHAMMAD UNIVERSITY OF ISLAM - LOS ANGELES Los Angeles, CA | 6.5 |
| Snowline Academy Phelan, CA | 6.5 |
| Calaveras Unified Alternative-Sierra Hills Education Center San Andreas, CA | 6.4 |
| ECF KAYNE ERAS CENTER Culver City, CA | 6.6 |
| LEROY HAYNES EDUCATIONAL CENTER La Verne, CA | 6.6 |
| MACBETH ACADEMY Irvine, CA | 6.6 |
Frequently Asked Questions
Common questions about Delta Keys Charter
What grades does Delta Keys Charter serve?
Delta Keys Charter serves students in grades Kindergarten through 12th.
How many students attend Delta Keys Charter?
Delta Keys Charter has an enrollment of approximately 125 students.
What is the student-teacher ratio at Delta Keys Charter?
The student-teacher ratio at Delta Keys Charter is 20.8:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.
How does Delta Keys Charter rank in CA?
Delta Keys Charter ranks #4,551 of 9,539 schools in CA.
What is Delta Keys Charter's MySchoolScout rating?
Delta Keys Charter has a current MySchoolScout rating of 6.5 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 Keys Charter?
Based on loaded state assessment records, Delta Keys Charter has 6% math proficiency (multi-year average, 2017-2024) and 14% reading/ELA proficiency (multi-year average, 2017-2024).
Is Delta Keys Charter a charter school?
Yes, Delta Keys Charter is a charter school. Charter schools are publicly funded but independently operated, often with more flexibility in curriculum and teaching methods.
Is Delta Keys Charter a Title I school?
No, Delta Keys Charter is not currently a Title I school.
What does the Free & Reduced Lunch percentage mean for Delta Keys Charter?
76.0% of students at Delta Keys 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.
Explore More Schools
Neighborhood Context
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Quick Facts NCES CCD (SY 2022-23)
- Grades
- Kindergarten – 12th
- Enrollment
- 125
- Student-Teacher Ratio
- 20.8:1
- Teachers (FTE)
- 6
- Free/Reduced Lunch
- 76.0%
- Type
- regular
- Setting
- Fringe Rural
- County
- San Joaquin County
- Chronic Absenteeism (SY 2022-23)
- 8.0%
- Phone
- (209) 830-6363
- 4-Year Graduation
- 62.0%
Resources & Links
District
New Jerusalem Elementary- District Enrollment
- 1,643
- Schools in District
- 6
- Per-Pupil Spending
- $16,186
- District Rank
- #3 of 5
Other Schools in This District
How we rate schools
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