Delta Keys Charter

Public, Charter, Virtual, Alternative K-12

31400 S. Koster Rd.
Tracy, CA 95304-8824

(209) 830-6363

District: New Jerusalem Elementary

SchoolDigger Rank:
1795^th of 2,346 California Alternative Schools

Per Pupil Expenditures: $9,037

Student/teacher ratio: 24.6

Number of students: 123

Racial breakdown:

Hispanic:

69.1%

White:

13.0%

African American:

6.5%

Free/discounted lunch recipients: 70.7%

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Performance Trends

Compare Details Delta Keys Charter ranks worse than 76.5% of high schools in California. (See more...)

Compare Details In 2023 the calculated Average Standard Score was 16.25. (See more...)

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.

The high school dropout rate measures the percentage of students who do not complete their high school education.

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

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...)

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

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...)

Compare Delta Keys Charter employs 4.9 full-time teachers.

Finance

Compare Details The average total spent per student at Delta Keys Charter is $9,037, which is the 2^nd highest among 4 alternative schools in the New Jerusalem Elementary School District.

Schooldigger 2023 Rankings:

Delta Keys Charter:

SchoolDigger ranks Delta Keys Charter 1795^th of 2346 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
2019	20.11	1622^nd	2133	24.0%
2021	10.03	1174^th	1290	9.0%
2022	14.83	1797^th	2123	15.4%
2023	16.25	1784^th	2335	23.6%

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	690^th	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
2019	18.41	1534^th	1937	20.8%
2021	8.28	1067^th	1126	5.2%
2022	16.41	1636^th	1943	15.8%
2023	12.52	1875^th	2237	16.2%

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
2019	15.84	1513^th	1833	17.5%
2021	6.72	1011^th	1054	4.1%
2022	12.81	1650^th	1858	11.2%
2023	12.46	1788^th	2106	15.1%

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
2019	21.55	1419^th	1880	24.5%
2021	10.93	1011^th	1122	9.9%
2022	16.33	1599^th	1916	16.5%
2023	20.67	1585^th	2195	27.8%

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
2019	24.53	1342^nd	1814	26.0%
2022	18.09	1531^st	1861	17.7%
2023	10.53	1859^th	2132	12.8%

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	1118^th	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.

Data source: California Department of Education

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Enrollment information for Delta Keys Charter

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Year	White	African American	Asian	Hispanic	American Indian	Pacific Islander	Two or More Races	Total
2018	20	3	3	33	0	0	4	63
2019	57	8	9	112	0	1	14	201
2020	57	16	8	129	0	2	16	228
2021	45	12	7	115	0	0	12	191
2022	32	8	8	106	1	1	8	164
2023	16	8	7	85	0	1	6	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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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

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

Year	Total 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 1622^nd of 2133 High schools	Ranks 1784^th of 2335 High schools	0.4%

Test Scores

	% proficient Pre-pandemic (2018-2019)	% proficient Post pandemic (2022-2023)	Change (%)
11th Grade English Language Arts/Literacy (Delta Keys Charter)	14.3	18	3.7%
11th Grade English Language Arts/Literacy (New Jerusalem Elementary)	26.7	33.7	6.9%
11th Grade English Language Arts/Literacy (California)	57.3	55.4	1.9%
11th Grade Mathematics (Delta Keys Charter)	0	2.6	2.6%
11th Grade Mathematics (New Jerusalem Elementary)	5.7	10.1	4.4%
11th Grade Mathematics (California)	32.2	27.4	4.9%
11th Grade Science (Delta Keys Charter)	3.7	5.7	2%
11th Grade Science (New Jerusalem Elementary)	10.7	6.9	3.8%
11th Grade Science (California)	30.4	31.7	1.3%
12th Grade Science (Delta Keys Charter)	15.5	16.7	1.2%
12th Grade Science (New Jerusalem Elementary)	21	18	3%
12th Grade Science (California)	25.6	26.9	1.3%

Student Body

	Number of students Pre-pandemic (2018-2019)	Number of students Post pandemic (2022-2023)	Change (%)
Total Students	201	123	38.8%
African American	8	8
American Indian	0	0
Asian	9	7	22.2%
Hispanic	112	85	24.1%
Pacific Islander	1	1
White	57	16	71.9%
Two or More Races	14	6	57.1%
% Free/Discounted Lunch Recipients	61.7%	70.7%	9%

Schools Near Delta Keys Charter

Choose columns to see: Summary School Students/Teachers Ranking Test Scores Immunizations Finance All

School													Students/Teachers											Ranking ()				Ranking ()				CAST Science (2023)					Smarter Balanced Assessments English Language Arts/Literacy (2023)								Smarter Balanced Assessments Mathematics (2023)								% Completely Immunized (2020)	% Polio (2020)	% Hepatitis B (2020)	% Varicella (2020)	% DTP (2020)	% MMR (2020)	Per Pupil Expenditures (2018)
Name	Type	Grades	Address	City	Zip	County	District	Is Charter	Is Magnet	Is Virtual	Is Title I	Phone	Enrollment	Full-time Teachers	Student/ Teacher Ratio	Free/Discounted Lunch Recipients	White	Black	Hispanic	Asian	American Indian	Pacific Islander	Two or More Races	Average Standard Score ()	Statewide Rank ()	State Percentile ()	SchoolDigger Rating ()	Average Standard Score ()	Statewide Rank ()	State Percentile ()	Rank Change from Previous Year	CAST Science 5th Grade	CAST Science 8th Grade	CAST Science 11th Grade	CAST Science 12th Grade	CAST Science End of Course	Smarter Balanced Assessments English Language Arts/Literacy 3rd Grade	Smarter Balanced Assessments English Language Arts/Literacy 4th Grade	Smarter Balanced Assessments English Language Arts/Literacy 5th Grade	Smarter Balanced Assessments English Language Arts/Literacy 6th Grade	Smarter Balanced Assessments English Language Arts/Literacy 7th Grade	Smarter Balanced Assessments English Language Arts/Literacy 8th Grade	Smarter Balanced Assessments English Language Arts/Literacy 11th Grade	Smarter Balanced Assessments English Language Arts/Literacy End of Course	Smarter Balanced Assessments Mathematics 3rd Grade	Smarter Balanced Assessments Mathematics 4th Grade	Smarter Balanced Assessments Mathematics 5th Grade	Smarter Balanced Assessments Mathematics 6th Grade	Smarter Balanced Assessments Mathematics 7th Grade	Smarter Balanced Assessments Mathematics 8th Grade	Smarter Balanced Assessments Mathematics 11th Grade	Smarter Balanced Assessments Mathematics End of Course	% Completely Immunized KG	% Polio KG	% Hepatitis B KG	% Varicella KG	% DTP KG	% MMR KG	Total
Valley View Charter Prep	Public, Virtual, Charter, Alternative	K-12	31400 S Koster Rd.	Tracy	95304	San Joaquin County	Valley View Charter Prep District	Yes	(n/a)	Yes	(n/a)	(866) 992-9033	613	22	27.3	26.1%	305 (49.8%)	38 (6.2%)	106 (17.3%)	122 (19.9%)	6 (1.0%)	1 (0.2%)	34 (5.5%)								(n/a)	52.8	40.9	60.9		51.4	55.6	54.2	66.7	67.9	65.5	59.1	83.3	63.2	51.9	49.2	41.7	49.1	50.0	40.9	45.8	47.0	48.3	58.3	76.7	56.7	55.0	65.0
Delta Charter	Public, Charter, Alternative	K-12	31400 S. Koster Rd.	Tracy	95304	San Joaquin County	New Jerusalem Elementary	Yes	(n/a)	No	(n/a)	(209) 830-6363	798	49	16.4	48.7%	253 (31.7%)	46 (5.8%)	401 (50.3%)	28 (3.5%)	3 (0.4%)	3 (0.4%)	64 (8.0%)								(n/a)	30.4	19.6	8.0		21.3	21.6	32.3	39.1	28.1	28.8	33.3	40.7	32.4	23.5	22.6	42.2	26.3	14.3	20.4	9.6	21.3	91.3				91.3		$10,700
Delta Home Charter	Public, Virtual, Charter, Alternative	K-12	31400 S. Koster Rd.	Tracy	95304	San Joaquin County	New Jerusalem Elementary	Yes	(n/a)	Yes	(n/a)	(209) 830-6363	241	12	19.8	49.0%	67 (27.8%)	8 (3.3%)	128 (53.1%)	15 (6.2%)	2 (0.8%)	3 (1.2%)	17 (7.1%)								(n/a)	25.0	14.0			17.6	25.0	31.6	29.2	21.2	29.6	23.5		26.3	16.7	15.8	16.7	6.1	18.5	9.8		13.7							$7,785
Delta Keys Charter	Public, Virtual, Charter, Alternative	K-12	31400 S. Koster Rd.	Tracy	95304	San Joaquin County	New Jerusalem Elementary	Yes	(n/a)	Yes	(n/a)	(209) 830-6363	123	5	24.6	70.7%	16 (13.0%)	8 (6.5%)	85 (69.1%)	7 (5.7%)	0 (0.0%)	1 (0.8%)	6 (4.9%)								(n/a)			5.7	16.7	10.2							18.0	18.0							2.6	2.6							$9,037
Delta Charter Online	Public, Virtual, Charter, Alternative	K-12	31400 S. Koster Rd.	Tracy	95304	San Joaquin County	New Jerusalem Elementary	Yes	(n/a)	Yes	(n/a)	(209) 830-6363	232	9	25.9	49.6%	58 (25.0%)	7 (3.0%)	129 (55.6%)	20 (8.6%)	1 (0.4%)	2 (0.9%)	14 (6.0%)								(n/a)			7.1		9.2							34.1	34.1							14.1	14.1							$7,850
Tracy Independent Study Charter	Public, Virtual, Charter, Alternative	K-12	1975 W. Lowell Ave.	Tracy	95376	San Joaquin County	Tracy Joint Unified	Yes	(n/a)	Yes	(n/a)	(209) 830-3200	300	19	15.6	63.0%	43 (14.3%)	32 (10.7%)	151 (50.3%)	40 (13.3%)	0 (0.0%)	5 (1.7%)	29 (9.7%)								(n/a)		20.0	20.0	5.0	17.8	63.6	38.5		38.5	20.0	26.7	28.6	31.0	36.4	23.1		15.4	10.0	19.4	8.0	13.8
California Connections Academy Northern California	Public, Virtual, Charter, Alternative	K-12	580 N. Wilma Ave. Ste. G	Ripon	95366	San Joaquin County	California Connections Academy @ Ripon District	Yes	(n/a)	Yes	(n/a)	(209) 253-1208	1,766	50	35.2	48.1%	547 (31.0%)	155 (8.8%)	551 (31.2%)	136 (7.7%)	5 (0.3%)	11 (0.6%)	351 (19.9%)								(n/a)	34.9	29.6	32.2		31.7	34.8	29.3	46.8	40.3	42.6	51.2	52.0	45.0	19.6	27.6	31.3	20.8	25.0	17.6	14.7	21.0	50.0	54.6	63.6	56.8	52.3	56.8
Hart-Ransom Academic Charter	Public, Virtual, Charter, Alternative	K-12	3920 Shoemake Ave.	Modesto	95358	Stanislaus County	Hart-Ransom Union Elementary	Yes	(n/a)	Yes	(n/a)	(209) 523-0401	436	18	24.5	42.0%	193 (44.3%)	7 (1.6%)	149 (34.2%)	39 (8.9%)	0 (0.0%)	0 (0.0%)	48 (11.0%)								(n/a)	24.2	57.7	44.4		42.3	51.4	23.8	36.4	57.9	50.0	65.4	75.0	52.9	46.0	23.8	18.2	50.0	41.9	51.9	36.1	39.0	50.0	54.2	70.8	52.1	54.2	56.3	$8,057
Stanislaus County West Campus	Public, Alternative	K-12	2215 Blue Gum Ave.	Modesto	95358	Stanislaus County	Stanislaus County Office of Education	No	(n/a)	No	(n/a)	(209) 567-4739	52	4	11.9	94.2%	12 (23.1%)	6 (11.5%)	29 (55.8%)	3 (5.8%)	0 (0.0%)	0 (0.0%)	2 (3.8%)								(n/a)																												$18,725
Connecting Waters Charter School - Central Valley	Public, Charter, Alternative	K-12	2000 W. Briggsmore Ave.	Modesto	95350	Stanislaus County	Connecting Waters Charter School - Central Valley District	Yes	(n/a)	No	(n/a)	(209) 874-1119	624	49	12.6	51.3%	198 (31.7%)	7 (1.1%)	305 (48.9%)	32 (5.1%)	1 (0.2%)	2 (0.3%)	77 (12.3%)								(n/a)	17.8	39.0	36.7		31.9	20.9	35.6	26.7	44.2	47.9	54.2	51.0	41.0	27.9	33.3	22.2	11.6	27.1	33.9	12.2	24.4	48.2	59.3	70.4	63.0	59.3	63.0

Frequently Asked Questions about Delta Keys Charter

Is Delta Keys Charter a good school?

Delta Keys Charter ranks in the bottom 23.5% of California alternative schools.

What district is Delta Keys Charter in?

New Jerusalem Elementary

How many students attend Delta Keys Charter?

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

What is the racial makeup of Delta Keys Charter?

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

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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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