Delta Keys Charter

Summary:

Delta Keys Charter is an alternative public charter virtual school located in Tracy, California, serving grades K-12 with a total enrollment of 123 students. It is part of the New Jerusalem Elementary school district.

Delta Keys Charter is struggling academically, with significantly lower test scores compared to the state and its local district. In 2023-2024, only 15.63% of 11th graders were proficient or better in ELA, and 12.5% were proficient or better in Math, compared to 55.73% and 27.9% statewide, respectively. The school also has a very high percentage of students receiving free or reduced-price lunch, reaching 70.73% in 2022-2023, indicating a high concentration of economically disadvantaged students. Additionally, Delta Keys Charter has a relatively high student-teacher ratio of 24.6, which may contribute to its academic challenges.

Interestingly, other charter schools in the area, such as Delta Charter and Valley View Charter Prep, significantly outperform Delta Keys Charter on academic measures. For example, in 2023-2024, 48.1% of 11th graders at Delta Charter were proficient or better in ELA, compared to only 15.63% at Delta Keys Charter. Additionally, Delta Keys Charter has struggled with very high chronic absenteeism rates, reaching over 33% in 2020-2021, which is likely a major contributing factor to the school's poor academic performance and high dropout rates.


Detail:

Public, Charter, Virtual, Alternative K-12

 31400 South Koster Rd.
       Tracy, CA  95304-8824


(209) 830-6363

District: New Jerusalem Elementary

SchoolDigger Rank:
1685th of 2,323 California Alternative Schools

Per Pupil Expenditures:  $9,037 Help


Student/teacher ratio:  24.6 Help
Number of students:  123

Racial breakdown:

Hispanic:
69.1%
White:
13.0%
African American:
6.5%
more

Free/discounted lunch recipients:  70.7% Help


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Performance Trends
Help
Compare Details Delta Keys Charter ranks worse than 72.5% of high schools in California. (See more...)
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Compare Details In 2024 the calculated Average Standard Score was 19.64. (See more...)
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The Adjusted Cohort Graduation Rate (ACGR) measures the percentage of Delta Keys Charter freshmen who graduate within four years, adjusting for students who transfer in or out.
Help
The high school dropout rate measures the percentage of students who do not complete their high school education.
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Chronic absenteeism in a high school refers to a situation where students repeatedly miss school, with the threshold often defined as missing 10% or more of school days for any reason, excused or unexcused.
Student Body
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Compare Details Delta Keys Charter has the smallest alternative school student body size in the New Jerusalem Elementary School District. Racial makeup is: Hispanic (69.1%), White (13%), African American (6.5%). (See more...)
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Compare Details 70.7% of students are receiving a free or discounted lunch. This is the highest percentage in the New Jerusalem Elementary School District. (See more...)
Teachers
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Compare Details The student/teacher ratio at Delta Keys Charter is 24.6. 2 alternative schools in the New Jerusalem Elementary School District have better student/teacher ratios. (See more...)
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Compare Delta Keys Charter employs 4.9 full-time teachers.
Finance
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Compare Details The average total spent per student at Delta Keys Charter is $9,037, which is the 2nd highest among 4 alternative schools in the New Jerusalem Elementary School District.
Schooldigger 2024 Rankings:

Delta Keys Charter:

SchoolDigger ranks Delta Keys Charter 1685th of 2323 California public high schools. (See Delta Keys Charter in the ranking list.)

High School Test Score Ratings by Student Subgroup:


Low Socio Economic Status students:
Female students:
Male students:
Hispanic students:




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Rank History for Delta Keys Charter

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Rank History for all students at Delta Keys Charter

Year Avg Standard Score Statewide Rank Total # Ranked High Schools CA State Percentile SchoolDigger Rating
2019 20.11 1622nd 2133 24.0%
2021 10.03 1174th 1290 9.0%
2022 14.83 1797th 2123 15.4%
2023 16.25 1797th 2348 23.5%
2024 19.64 1685th 2323 27.5%
See the entire list of California Alternative School Rankings!

Rank History for English Language Learner students at Delta Keys Charter

Year Avg Standard Score Statewide Rank Total # Ranked High Schools CA State Percentile SchoolDigger Rating
2022 34.39 690th 1044 33.9%
See the entire list of Best California Alternative Schools for English Language Learner Students!

Rank History for Low Socio Economic Status students at Delta Keys Charter

Year Avg Standard Score Statewide Rank Total # Ranked High Schools CA State Percentile SchoolDigger Rating
2019 18.41 1534th 1937 20.8%
2021 8.28 1067th 1126 5.2%
2022 16.41 1636th 1943 15.8%
2023 12.52 1885th 2247 16.1%
2024 22.07 1610th 2235 28.0%
See the entire list of Best California Alternative Schools for Low Socio Economic Status Students!

Rank History for Female students at Delta Keys Charter

Year Avg Standard Score Statewide Rank Total # Ranked High Schools CA State Percentile SchoolDigger Rating
2019 15.84 1513th 1833 17.5%
2021 6.72 1011th 1054 4.1%
2022 12.81 1650th 1858 11.2%
2023 12.46 1800th 2118 15.0%
2024 15.38 1701st 2098 18.9%
See the entire list of Best California Alternative Schools for Female Students!

Rank History for Male students at Delta Keys Charter

Year Avg Standard Score Statewide Rank Total # Ranked High Schools CA State Percentile SchoolDigger Rating
2019 21.55 1419th 1880 24.5%
2021 10.93 1011th 1122 9.9%
2022 16.33 1599th 1916 16.5%
2023 20.67 1595th 2207 27.7%
2024 16.87 1666th 2172 23.3%
See the entire list of Best California Alternative Schools for Male Students!

Rank History for Hispanic students at Delta Keys Charter

Year Avg Standard Score Statewide Rank Total # Ranked High Schools CA State Percentile SchoolDigger Rating
2019 24.53 1342nd 1814 26.0%
2022 18.09 1531st 1861 17.7%
2023 10.53 1869th 2142 12.7%
2024 25.39 1467th 2125 31.0%
See the entire list of Best California Alternative Schools for Hispanic Students!

Rank History for White students at Delta Keys Charter

Year Avg Standard Score Statewide Rank Total # Ranked High Schools CA State Percentile SchoolDigger Rating
2019 7.55 1118th 1222 8.5%
See the entire list of Best California Alternative Schools for White Students!

Data source: test scores: California Department of Education, rankings: SchoolDigger.com

As you review the school rankings data, please be aware that some of the information from certain demographics is missing. The reason for this omission is that the data has been redacted from the source data itself due to low population samples in these specific demographic groups.

Redacting data from low population samples is a necessary step to ensure the reliability and accuracy of the results, as small sample sizes may not be representative of the broader population. Additionally, this measure helps protect the privacy of individuals belonging to these demographic groups.

Delta Keys Charter Test Scores
Tests: 
  
Grades: 
  
Years: 
  
Group by: 
District Scores:
State Scores:    
  
Subgroup: 





Data source: California Department of Education

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Enrollment information for Delta Keys Charter

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Compare
Year White African American Asian Hispanic American Indian Pacific Islander Two or More Races Not Specified Total
2018 20 3 3 33 0 0 4 0 63
2019 57 8 9 112 0 1 14 0 201
2020 57 16 8 129 0 2 16 0 228
2021 45 12 7 115 0 0 12 0 191
2022 32 8 8 106 1 1 8 0 164
2023 16 8 7 85 0 1 6 0 123

Data source: National Center for Education Statistics, U.S. Dept of Education.

About Enrollment/Ethnicity

For more information about how the Department of Education defines ethnicity, see Defining Race and Ethnicity Data, National Center for Education Statistics

Students eligible for free or discounted lunch at Delta Keys Charter

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Compare
Year # Students Full-time Teachers Student/Teacher ratio % Free/Discounted Lunch
2018 63 2.7 22.9 46
2019 201 3.0 67.0 61.7
2020 228 n/a n/a 53.9
2021 191 9.1 20.9 64.4
2022 164 6.2 26.2 63.4
2023 123 4.9 24.6 70.7

Data source: National Center for Education Statistics, U.S. Dept of Education.

About Students eligible for discounted/free lunch:

The National School Lunch Program (NSLP) provides low-cost or free meals to students in U.S. public and nonprofit private schools based on household income. Those with incomes below 130% of the poverty line receive free lunch, while those between 130% and 185% qualify for reduced-price lunch. The percentage of students receiving free or reduced-price lunch serves as a marker for poverty, as it reflects the socioeconomic status of families in a given school or district. A higher FRPL rate typically indicates a higher concentration of low-income families, suggesting that the school or district may face additional challenges in providing adequate resources and support for student success.

Student/Teacher Ratio Delta Keys Charter

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Compare
Year # Students Full-time Teachers Student/Teacher ratio % Free/Discounted Lunch
2018 63 2.7 22.9 46
2019 201 3.0 67.0 61.7
2020 228 n/a n/a 53.9
2021 191 9.1 20.9 64.4
2022 164 6.2 26.2 63.4
2023 123 4.9 24.6 70.7

Data source: National Center for Education Statistics, U.S. Dept of Education.

About Student-Teacher Ratio

Student/teacher ratio is calculated by dividing the total number of students by the total number of full-time equivalent teachers. Please note that a smaller student/teacher ratio does not necessarily translate to smaller class size. In some instances, schools hire teachers part time, and some teachers are hired for specialized instruction with very small class sizes. These and other factors contribute to the student/teacher ratio. Note: For private schools, Student/teacher ratio may not include Pre-Kindergarten.
Finances

Per Pupil Expenditures for Delta Keys Charter

Help

YearTotal Expenditures Per Pupil
2018 $9,037

Data source: California Department of Education
Pre and Post Pandemic Data

Impact of COVID-19 on Delta Keys Charter

The coronavirus has had a profound impact on education in America. Learning shifted online overnight, attendance numbers dwindled, and enrollment decreased. SchoolDigger.com is making it easier for you to better assess how COVID-19 has impacted your school. Through the collection of pre-pandemic (2019) and current data, SchoolDigger.com is sharing test scores, enrollment numbers and school demographics from schools across the country – and we make it easy to see how impacted schools compare locally and statewide.

Rankings

Rank
Pre-pandemic (2018-2019)
Rank
Post pandemic (2022-2023)
Change (%)
Ranks 1622nd of 2133 High schoolsRanks 1797th of 2348 High schools
 0.5%

Test Scores

% proficient
Pre-pandemic (2018-2019)
% proficient
Post pandemic (2022-2023)
Change (%)
11th Grade English Language Arts/Literacy (Delta Keys Charter)14.318
 3.7%
   11th Grade English Language Arts/Literacy (New Jerusalem Elementary)26.733.7
 6.9%
   11th Grade English Language Arts/Literacy (California)57.355.4
 1.9%
11th Grade Mathematics (Delta Keys Charter)02.6
 2.6%
   11th Grade Mathematics (New Jerusalem Elementary)5.710.1
 4.4%
   11th Grade Mathematics (California)32.227.4
 4.9%
11th Grade Science (Delta Keys Charter)3.75.7
 2%
   11th Grade Science (New Jerusalem Elementary)10.76.9
 3.8%
   11th Grade Science (California)30.431.7
 1.3%
12th Grade Science (Delta Keys Charter)15.516.7
 1.2%
   12th Grade Science (New Jerusalem Elementary)2118
 3%
   12th Grade Science (California)25.626.9
 1.3%

Student Body

Number of students
Pre-pandemic (2018-2019)
Number of students
Post pandemic (2022-2023)
Change (%)
Total Students201123
 38.8%
African American88
American Indian00
Asian97
 22.2%
Hispanic11285
 24.1%
Pacific Islander11
White5716
 71.9%
Two or More Races146
 57.1%
% Free/Discounted Lunch Recipients61.7%70.7%
 9%


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Frequently Asked Questions about Delta Keys Charter

Students at Delta Keys Charter are 69% Hispanic, 13% White, 7% African American, 6% Asian, 5% Two or more races.

Delta Keys Charter ranks 1685th of 2323 California alternative schools. SchoolDigger rates this school 1 star out of 5.

In the 2022-23 school year, 123 students attended Delta Keys Charter.


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SchoolDigger data sources: National Center for Education Statistics, U.S. Department of Education, the U.S. Census Bureau and the California Department of Education.

IMPORTANT DISCLAIMERS: Not all boundaries are included. We make every effort to ensure that boundaries are up-to-date. But it's important to note that these are approximations and are for general informational purposes only. To verify legal descriptions of boundaries or school locations, contact your local tax assessor's office and/or school district.





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