Delta Charter

Q: Is Delta Charter a good school?

Delta Charter ranks 1571 st of 2323 California high schools. SchoolDigger rates this school 2 stars out of 5.

Summary:

Delta Charter is a public charter high school located in Aptos, California, serving grades 9-12 with a total enrollment of 116 students. It is part of the Santa Cruz City High School District, which is ranked 495 out of 1,568 districts in California and has a 3-star rating from SchoolDigger.

Delta Charter consistently underperforms compared to the surrounding schools and the state average on standardized tests. In the 2023-2024 school year, only 27.03% of 11th-grade students were proficient or better in English Language Arts/Literacy, compared to 65.56% at Santa Cruz High and 55.73% statewide. In Mathematics, only 7.89% of 11th-grade students were proficient or better, compared to 36.29% at Santa Cruz High and 27.9% statewide. Delta Charter also has fluctuating graduation rates, ranging from 67.3% to 91.7%, and higher dropout rates, ranging from 4.4% to 32.7%, compared to the nearby schools like Aptos High and Soquel High, which have consistently higher graduation rates around 92-96% and lower dropout rates of 3-5.5%.

Delta Charter's performance is particularly low for certain student subgroups, ranking in the bottom 25% of California high schools for female, Hispanic, and low socioeconomic status students in both English Language Arts and Mathematics. Additionally, Delta Charter has significantly higher chronic absenteeism rates, ranging from 38.7% to 48.9% in recent years, compared to 22.2-28.0% at the nearby schools. These challenges suggest that Delta Charter may struggle to provide equitable educational opportunities for all its students, and further investigation into the root causes of these issues could help identify areas for improvement.

Detail:

Public, Charter 9-12

6500 Soquel Dr. Bldg. 1190
Aptos, CA 95003-3119

(831) 477-5212

District: Santa Cruz City High

SchoolDigger Rank:
1571^st of 2,323 California High Schools

Student/teacher ratio: 13.0

Number of students: 116

Racial breakdown:

White:

61.2%

Hispanic:

30.2%

Two or more races:

2.6%

Free/discounted lunch recipients: 38.8%

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Performance Trends

Compare Details Delta Charter ranks worse than 67.6% of high schools in California. It also ranks 5^th among 6 ranked high schools in the Santa Cruz City High School District. (See more...)

Compare Details In 2024 the calculated Average Standard Score was 24.34. (See more...)

The four-year cohort graduation rate measures the percentage of students at Delta Charter who earn a standard high school diploma within four years of starting ninth grade.

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

Chronic absenteeism in a 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 Racial makeup is: White (61.2%), Hispanic (30.2%), two or more races (2.6%). (See more...)

Compare Details 38.8% of students are receiving a free or discounted lunch. (See more...)

Teachers

Compare Details The student/teacher ratio at Delta Charter is 13, which is the lowest among 6 high schools in the Santa Cruz City High School District! (See more...)

Compare Delta Charter employs 8.9 full-time teachers.

Schooldigger 2024 Rankings:

Delta Charter:

SchoolDigger ranks Delta Charter 1571^st of 2323 California public high schools. (See Delta Charter in the ranking list.)

High School Test Score Ratings by Student Subgroup:

Low Socio Economic Status students:

Female students:

Male students:

Hispanic students:

White students:

Santa Cruz City High:

SchoolDigger ranks Santa Cruz City High 495^th of 1568 California school districts. (See district ranking list.)

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Rank History for Delta Charter

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Rank History for all students at Delta Charter

Year	Avg Standard Score	Statewide Rank	Total # Ranked High Schools	CA State Percentile
2004	40.19	700^th	1653	57.7%
2005	34.80	926^th	1901	51.3%
2006	40.95	812^th	1968	58.7%
2007	52.82	589^th	2063	71.4%
2008	40.80	894^th	2117	57.8%
2009	36.87	1125^th	2238	49.7%
2010	35.60	1115^th	2281	51.1%
2011	39.68	1072^nd	2367	54.7%
2012	40.19	1046^th	2354	55.6%
2013	45.92	897^th	2426	63.0%
2015	49.91	982^nd	1994	50.8%
2016	37.75	1224^th	2039	40.0%
2017	28.25	1404^th	2021	30.5%
2018	18.75	1527^th	2017	24.3%
2019	22.37	1564^th	2133	26.7%
2022	36.29	1278^th	2123	39.8%
2023	22.90	1624^th	2348	30.8%
2024	24.34	1571^st	2323	32.4%

See the entire list of California High School Rankings!

Rank History for Low Socio Economic Status students at Delta Charter

Year	Avg Standard Score	Statewide Rank	Total # Ranked High Schools	CA State Percentile	SchoolDigger Rating
2023	18.00	1716^th	2247	23.6%
2024	29.15	1450^th	2235	35.1%

See the entire list of Best California High Schools for Low Socio Economic Status Students!

Rank History for Female students at Delta Charter

Year	Avg Standard Score	Statewide Rank	Total # Ranked High Schools	CA State Percentile
2018	12.10	1483^rd	1760	15.7%
2019	25.02	1362^nd	1833	25.7%
2023	25.81	1442^nd	2118	31.9%
2024	20.62	1579^th	2098	24.7%

See the entire list of Best California High Schools for Female Students!

Rank History for Male students at Delta Charter

Year	Avg Standard Score	Statewide Rank	Total # Ranked High Schools	CA State Percentile
2019	16.79	1509^th	1880	19.7%
2022	30.31	1274^th	1916	33.5%
2023	19.84	1612^th	2207	27.0%
2024	27.51	1395^th	2172	35.8%

See the entire list of Best California High Schools for Male Students!

Rank History for Hispanic students at Delta Charter

Year	Avg Standard Score	Statewide Rank	Total # Ranked High Schools	CA State Percentile
2019	25.96	1318^th	1814	27.3%
2023	27.34	1439^th	2142	32.8%
2024	19.26	1602^nd	2125	24.6%

See the entire list of Best California High Schools for Hispanic Students!

Rank History for White students at Delta Charter

Year	Avg Standard Score	Statewide Rank	Total # Ranked High Schools	CA State Percentile
2018	5.32	1096^th	1173	6.6%
2019	9.28	1092^nd	1222	10.6%
2022	13.87	1053^rd	1204	12.5%
2023	9.78	1241^st	1434	13.5%
2024	13.02	1172^nd	1406	16.6%

See the entire list of Best California High 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 Charter

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Year	White	African American	Asian	Hispanic	American Indian	Pacific Islander	Two or More Races	Not Specified	Total
1997	26	0	0	9	1	n/a	n/a	0	36
1998	33	1	0	10	0	n/a	n/a	0	44
1999	35	2	1	5	2	n/a	n/a	0	45
2000	32	5	4	5	1	n/a	n/a	5	52
2001	26	4	5	8	0	n/a	n/a	1	44
2002	33	0	0	18	2	n/a	n/a	0	53
2003	33	0	0	18	2	n/a	n/a	0	53
2004	33	1	0	20	0	n/a	n/a	0	54
2005	45	2	2	18	0	n/a	n/a	8	75
2006	45	3	1	10	1	n/a	n/a	4	64
2007	35	1	22	14	0	n/a	n/a	4	76
2008	57	1	2	18	n/a	n/a	n/a	0	78
2009	61	2	1	21	1	0	23	0	109
2010	87	2	1	26	0	0	0	0	116
2011	80	4	0	30	1	0	1	0	116
2012	81	2	1	34	0	1	2	0	121
2013	81	4	3	26	4	1	4	0	123
2014	68	6	1	36	1	0	5	0	117
2015	79	5	2	35	1	0	6	0	128
2016	84	4	4	31	2	0	7	0	132
2017	81	1	2	37	3	0	5	0	129
2018	64	2	0	40	0	0	6	0	112
2019	63	2	1	52	0	1	4	0	123
2020	61	1	1	42	0	0	6	0	111
2021	64	0	2	37	0	0	6	0	109
2022	55	3	0	42	0	0	4	0	104
2023	70	1	1	40	0	0	2	2	116
2024	71	2	2	35	1	0	3	2	116

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 Charter

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Year	# Students	Full-time Teachers	Student/Teacher ratio	% Free/Discounted Lunch
1997	36	1.0	36.0	0
1998	44	3.0	14.7	0
1999	45	3.7	12.2	0
2000	52	3.2	16.3	0
2001	44	3.0	14.7	0
2002	53	3.0	17.7	0
2003	53	3.0	17.7	0
2004	54	3.5	15.4	0
2005	75	4.4	17.0	0
2006	64	4.4	14.5	0
2007	76	4.8	15.8	0
2008	78	6.8	11.5	n/a
2009	109	6.2	12.5	13.8
2010	116	5.1	22.6	8.6
2011	116	n/a	n/a	23.3
2012	121	6.3	19.1	n/a
2013	123	7.4	16.5	22.8
2014	117	7.5	15.6	28.2
2015	128	8.0	16.0	29.7
2016	132	8.0	16.5	29.5
2017	129	7.7	16.6	38
2018	112	7.5	14.8	38.4
2019	123	6.9	17.7	36.6
2020	111	n/a	n/a	36.9
2021	109	6.8	15.9	37.6
2022	104	8.9	11.6	30.8
2023	116	8.7	13.2	34.5
2024	116	8.9	13.0	38.8

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 Charter

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Year	# Students	Full-time Teachers	Student/Teacher ratio	% Free/Discounted Lunch
1997	36	1.0	36.0	0
1998	44	3.0	14.7	0
1999	45	3.7	12.2	0
2000	52	3.2	16.3	0
2001	44	3.0	14.7	0
2002	53	3.0	17.7	0
2003	53	3.0	17.7	0
2004	54	3.5	15.4	0
2005	75	4.4	17.0	0
2006	64	4.4	14.5	0
2007	76	4.8	15.8	0
2008	78	6.8	11.5	n/a
2009	109	6.2	12.5	13.8
2010	116	5.1	22.6	8.6
2011	116	n/a	n/a	23.3
2012	121	6.3	19.1	n/a
2013	123	7.4	16.5	22.8
2014	117	7.5	15.6	28.2
2015	128	8.0	16.0	29.7
2016	132	8.0	16.5	29.5
2017	129	7.7	16.6	38
2018	112	7.5	14.8	38.4
2019	123	6.9	17.7	36.6
2020	111	n/a	n/a	36.9
2021	109	6.8	15.9	37.6
2022	104	8.9	11.6	30.8
2023	116	8.7	13.2	34.5
2024	116	8.9	13.0	38.8

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.

Pre and Post Pandemic Data

Impact of COVID-19 on Delta 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 1564^th of 2133 High schools	Ranks 1624^th of 2348 High schools	4.2%

Test Scores

	% proficient Pre-pandemic (2018-2019)	% proficient Post pandemic (2022-2023)	Change (%)
11th Grade English Language Arts/Literacy (Delta Charter)	30.3	28.2	2.1%
11th Grade English Language Arts/Literacy (Santa Cruz City High)	65.6	62.6	3%
11th Grade English Language Arts/Literacy (California)	57.3	55.4	1.9%
11th Grade Mathematics (Delta Charter)	6.7	5	1.7%
11th Grade Mathematics (Santa Cruz City High)	46.4	32.8	13.6%
11th Grade Mathematics (California)	32.2	27.4	4.9%
12th Grade Science (Delta Charter)	5.7	15.2	9.4%
12th Grade Science (Santa Cruz City High)	34.2	33.8	0.4%
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	123	116	5.7%
African American	2	1	50%
American Indian	0	0
Asian	1	1
Hispanic	52	40	23.1%
Pacific Islander	1	0	100%
White	63	70	11.1%
Two or More Races	4	2	50%
% Free/Discounted Lunch Recipients	36.6%	34.5%	2.1%

Schools Near Delta Charter

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

School													Students/Teachers											Ranking (2024)				Ranking (2023)				CAST Science (2024)			Smarter Balanced Assessments English Language Arts/Literacy (2024)		Smarter Balanced Assessments Mathematics (2024)		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 (2024)	Statewide Rank (2024)	State Percentile (2024)	SchoolDigger Rating (2024)	Average Standard Score (2023)	Statewide Rank (2023)	State Percentile (2023)	Rank Change from Previous Year	CAST Science 11th Grade	CAST Science 12th Grade	CAST Science End of Course	Smarter Balanced Assessments English Language Arts/Literacy 11th Grade	Smarter Balanced Assessments English Language Arts/Literacy End of Course	Smarter Balanced Assessments Mathematics 11th Grade	Smarter Balanced Assessments Mathematics End of Course	Total
Delta Charter	Public, Charter	9-12	6500 Soquel Dr. Bldg. 1190	Aptos	95003	Santa Cruz County	Santa Cruz City High	Yes	(n/a)	No	(n/a)	(831) 477-5212	116	9	13.0	38.8%	71 (61.2%)	2 (1.7%)	35 (30.2%)	2 (1.7%)	1 (0.9%)	0 (0.0%)	3 (2.6%)	24.3	1571^st of 2323 public high schools	32.4%		22.9	1624^th of 2348 public high schools	30.8%	53		14.6	14.6	27.0	27.0	7.9	7.9
Soquel High	Public	9-12	401 Old San Jose Rd.	Soquel	95073	Santa Cruz County	Santa Cruz City High	No	(n/a)	No	(n/a)	(831) 429-3909	1,048	50	21.1	30.4%	498 (47.5%)	10 (1.0%)	419 (40.0%)	19 (1.8%)	3 (0.3%)	2 (0.2%)	94 (9.0%)	70.5	465^th of 2323 public high schools	80.0%		68.5	504^th of 2348 public high schools	78.5%	39		25.5	25.5	74.4	74.4	34.0	34.0
Aptos High	Public	9-12	100 Mariner Way	Aptos	95003	Santa Cruz County	Pajaro Valley Unified	No	(n/a)	No	(n/a)	(831) 728-7832	1,316	61	21.7	46.2%	580 (44.1%)	6 (0.5%)	633 (48.1%)	31 (2.4%)	1 (0.1%)	4 (0.3%)	58 (4.4%)	64.2	559^th of 2323 public high schools	75.9%		67.7	513^th of 2348 public high schools	78.2%	46		30.4	30.4	51.8	51.8	35.7	35.7
Harbor High	Public	9-12	300 La Fonda Ave.	Santa Cruz	95062	Santa Cruz County	Santa Cruz City High	No	(n/a)	No	(n/a)	(831) 429-3810	1,040	55	18.9	41.3%	377 (36.3%)	6 (0.6%)	556 (53.5%)	38 (3.7%)	0 (0.0%)	1 (0.1%)	61 (5.9%)	61.8	595^th of 2323 public high schools	74.4%		69.4	494^th of 2348 public high schools	79.0%	101		32.6	32.6	56.5	56.5	24.7	24.7
Costanoa Continuation High	Public	9-12	840 North Branciforte Ave.	Santa Cruz	95062	Santa Cruz County	Santa Cruz City High	No	(n/a)	No	(n/a)	(831) 429-3898	87	5	18.3	64.4%	11 (12.6%)	1 (1.1%)	71 (81.6%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	4 (4.6%)	12.9	1877^th of 2323 public high schools	19.2%		15.8	1809^th of 2348 public high schools	23.0%	68		10.0	10.0	13.0	13.0	0.0	0.0
Ark Independent Studies	Public	6-12	840 North Branciforte Ave.	Santa Cruz	95062	Santa Cruz County	Santa Cruz City High	No	(n/a)	No	(n/a)	(831) 429-3898	52	2	21.6	36.5%	24 (46.2%)	1 (1.9%)	23 (44.2%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	4 (7.7%)	62.6	581^st of 2323 public high schools	75.0%		73.1	435^th of 2348 public high schools	81.5%	146		45.5	45.5	56.3	56.3	20.0	20.0
Renaissance High Continuation	Public	9-12	11 Spring Valley Rd.	La Selva Beach	95076	Santa Cruz County	Pajaro Valley Unified	No	(n/a)	No	(n/a)	(831) 728-6344	122	15	8.0	91.8%	3 (2.5%)	0 (0.0%)	119 (97.5%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	8.8	2111^th of 2323 public high schools	9.1%		10.7	2014^th of 2348 public high schools	14.2%	97	1.6	4.3	2.7	5.4	5.4	0.0	0.0
Santa Cruz High	Public	9-12	415 Walnut Ave.	Santa Cruz	95060	Santa Cruz County	Santa Cruz City High	No	(n/a)	No	(n/a)	(831) 429-3960	1,104	51	21.6	25.5%	630 (57.1%)	22 (2.0%)	324 (29.3%)	32 (2.9%)	2 (0.2%)	1 (0.1%)	92 (8.3%)	90.5	152^nd of 2323 public high schools	93.5%		81.1	309^th of 2348 public high schools	86.8%	157		46.4	46.4	75.4	75.4	57.6	57.6
Santa Cruz County Regional Occupational Program	Public	10-12	400 Encinal St.	Santa Cruz	95060	Santa Cruz County	Santa Cruz County Regional Occupational Program	No	(n/a)	(n/a)	(n/a)	(831) 466-5762	0				0 ()	0 ()	0 ()	0 ()	0 ()	0 ()	0 ()								(n/a)
Santa Cruz County Community	Public	7-12	400 Encinal St.	Santa Cruz	95060	Santa Cruz County	Santa Cruz County Office of Education	No	(n/a)	No	(n/a)	(831) 466-5728	733	32	23.0	50.9%	300 (40.9%)	10 (1.4%)	376 (51.3%)	13 (1.8%)	9 (1.2%)	3 (0.4%)	16 (2.2%)	24.4	1568^th of 2323 public high schools	32.5%		26.9	1509^th of 2348 public high schools	35.7%	59		14.4	14.6	30.8	29.8	5.8	5.5	$17,330

Frequently Asked Questions about Delta Charter

Is Delta Charter a good school?

Delta Charter ranks 1571^st of 2323 California high schools. SchoolDigger rates this school 2 stars out of 5.

What is the racial makeup of Delta Charter?

Students at Delta Charter are 61% White, 30% Hispanic, 3% Two or more races, 2% African American, 2% Asian, 2% Not Specified.

What district is Delta Charter in?

Santa Cruz City High

How many students attend Delta Charter?

In the 2023-24 school year, 116 students attended Delta 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.