Enrollment
113
High
DISTRICT 571 · STATE 838
SCHOOL COMMUNITY·SANTA CRUZ CITY HIGH·NCES 063560006664
Delta Charter
6500 Soquel Dr. Bldg. 1190, Aptos, CA 95003 · (831) 477-5212 · Santa Cruz County
GRADES 09–12HIGH22-SUBURBCHARTERREGULAR SCHOOL113 STUDENTS
Student : Teacher
13.3:1
9 FTE teachers
DISTRICT 20.9:1 · STATE 18.2:1
Free / Reduced Lunch
39%
44 students
DISTRICT 37% · STATE 65%
Community
0
0 members
Enrollment and student:teacher ratio compared against other high schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade, 2024-25
| Grade | Students | Share |
|---|---|---|
| Grade 9 | 13 | 12% |
| Grade 10 | 19 | 17% |
| Grade 11 | 39 | 35% |
| Grade 12 | 42 | 37% |
Student demographics
56%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 60% · STATE 62% · US 70%
Student head counts by race/ethnicity from federal NCES enrollment data. District, state, and US figures are each group's share of all public school students in that area (US excludes territories). Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
Test scores
CAASPP 2024-25 . % met or exceeded standardEnglish Language Arts
24.4%
CA avg 49.1% . -22.6pp since 2014
Math
2.4%
CA avg 37.7% . -10.6pp since 2014
What this means: On the CAASPP, California's statewide test, about 24 of every 100 students at this school read and write at grade level and about 2 of 100 do math at grade level. Across all California schools, those numbers are about 49 and 38. Reading and writing scores are down about 23 points since 2014, while math scores are down about 11 points.
Performance levels, 2024-25
| Subject | Standard Exceeded | Standard Met | Standard Nearly Met | Standard Not Met |
|---|---|---|---|---|
| English Language Arts | 9.8% | 14.6% | 43.9% | 31.7% |
| Math | 2.4% | 0.0% | 24.4% | 73.2% |
Share of tested students at each CAASPP level. Each student counts in one level, so a row adds to about 100%.
CAASPP results by year
| School year | English Language Arts | Math |
|---|---|---|
| 2024-25 | 24.4% | 2.4% |
| 2023-24 | 27.0% | 7.9% |
| 2022-23 | 28.2% | 5.0% |
| 2021-22 | 30.8% | 7.4% |
| 2018-19 | 30.3% | 6.7% |
| 2017-18 | 18.5% | 6.7% |
| 2016-17 | 41.2% | 4.0% |
| 2015-16 | 42.0% | 13.0% |
| 2014-15 | 47.0% | 13.0% |
% met or exceeded standard, all students and all tested grades.
Source: CAASPP. All students, all grades. See all years and grades →
BeatsExpectations
Demographically-adjusted score · methodologyTier
UNDERPERFORMING
Bottom 10% of CA schools after controlling for student poverty
Actual proficiency
15.4%
composite math + reading, all grades
Predicted
56.7%
based on CA schools with similar FRL share
Beats by
-41.3pp
below demographic expectation
What this means: About 15% of students here test proficient in math and reading, below the roughly 57% typical for California schools with a similar share of low-income students. BeatsExpectations compares each school with others at the same poverty level, not by raw scores, so a school lands here when its results trail those comparable schools, which is not the same as having low scores. A higher-scoring school can still fall in this tier if similar schools score higher still.
BeatsExpectations runs a per-state regression of proficiency on free/reduced-lunch share, then scores each school by residual. How this is calculated →
Schools most like Delta Charter
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Delta Charter this school | 113 | 38.9% | 15.4% |
| OCASA College Prep San Juan Capistrano | 83 | 33.7% | N/A |
| Fall River Junior-Senior High McArthur | 226 | 42.0% | 34.0% |
| Oakdale Charter Oakdale | 56 | 37.5% | 20.7% |
| IvyTech Charter Moorpark | 72 | 30.6% | N/A |
| Six Rivers Charter High Arcata | 113 | 31.0% | N/A |
Matched among California high schools on enrollment, the share of students from low-income families (eligible for free or reduced-price lunch), and racial and ethnic makeup. Proficient is the average share of students meeting the state standard across all of the school's state tests in 2023-24 and 2024-25, the same combined score our test-score rankings use. Online schools and schools serving specialized populations are not matched.
Where Delta Charter ranks
Among high schools| Measure | This school | In California | In Santa Cruz County |
|---|---|---|---|
| State test proficiency ranked highest first | 15.4% | #1,026 of 1,052 | #9 of 9 |
| Math proficiency ranked highest first | 2.4% | #1,051 of 1,056 ▼ 73 | #9 of 9 no change |
| Reading proficiency ranked highest first | 24.4% | #1,023 of 1,056 ▼ 21 | #9 of 9 no change |
| 3-year test score change ranked biggest drop first | -5.7pp | #106 of 1,044 | #2 of 9 |
| Enrollment ranked largest first | 113 | #1,542 of 2,093 | #13 of 19 |
| Free and reduced lunch ranked highest share first | 38.9% | #1,302 of 1,575 | #7 of 14 |
Ranked against other public high schools. Online schools are left out of every list, and test-score lists leave out schools that serve specialized populations. Each rank links to the full list. Arrows under a test-score rank show places moved since the prior test year, among schools tested both years.
4-year change
SY 2020-21 vs SY 2024-25Enrollment
113
+4 (+4%) vs 2020
+157% since 2000-01, when it was 44
Student : Teacher
13.3:1
was 18.2:1
Source: NCES Common Core of Data
Enrollment and staffing by year
| School year | Students | Teachers (FTE) | Students per teacher | Free and reduced lunch |
|---|---|---|---|---|
| 2024-25 | 113 | 8.5 | 13.3:1 | 39% (44) |
| 2023-24 | 116 | 8.9 | 13.0:1 | 39% (45) |
| 2022-23 | 116 | 8.7 | 13.3:1 | 34% (40) |
| 2020-21 | 109 | 6 | 18.2:1 | 38% (41) |
| 2017-18 | 112 | 7.6 | 14.8:1 | 38% (43) |
| 2015-16 | 132 | 7 | 18.9:1 | 30% (39) |
| 2010-11 | 116 | N/A | N/A | 23% (27) |
| 2000-01 | 44 | 3 | 14.7:1 | 0% (0) |
Source: NCES Common Core of Data. Rows are the federal collections on file for Delta Charter.
Since 2017-18: students up 1% (112 to 113); teachers up 13% (7.6 to 8.5).
About Delta Charter
Delta Charter is a public very small high school in Aptos, California. Enrollment stands at 113 students, covering grades 9 through 12. That is 87% below the average of about 838 students for high schools in California.
Santa Cruz City High is the local district for Delta Charter. It runs 9 schools with 4,455 students.
The largest group at Delta Charter is White students, at 52%. Enrollment also includes 38% Hispanic and 5% multiracial. The diversity index for Delta Charter is 56%. For US public schools as a whole it is 70%.
On staff are 8.5 full-time-equivalent teachers; the student-to-teacher ratio is 13.3:1. The average for high schools in California is 18.2:1, so this school has fewer students per teacher. About 39% of students at Delta Charter are eligible for free or reduced-price lunch. Public schools in Santa Cruz County average 52%.
Delta Charter ranks in the bottom 10% of California schools after adjusting test results for student poverty. Actual: 15.4%. Predicted: 56.7%. Difference: 41.3 points.
Five-year Census Bureau estimates for Santa Cruz County show that the median household earns about $111,093 a year, about 44% of adults have at least a bachelor's degree, and the poverty rate is about 6%. Across Santa Cruz County, 83 public schools serve about 36,316 students.
Mar Vista Elementary sits about 0.3 miles from Delta Charter. Inside a five-mile radius, there are at least 8 other public schools. Nearby schools with test data average 47.6% proficiency; Delta Charter posts 15.4%.
Locale data from NCES put Delta Charter in a suburban area outside a principal city, within an urbanized area with a population between 100,000 and 250,000 (Suburb: Mid-size). Delta Charter is run as a public charter school.
Over 4 years, enrollment increased by 4 students, from 109 to 113. Federal data show the ratio falling from 18.2:1 to 13.3:1.
This page collects posts and questions about Delta Charter, such as open houses, carpools, and field trips. Current and former families are welcome to add their experience.
Santa Cruz County at a glance
View full county profilePopulation
264,926
Census ACS
Median income
$111,093
Household, ACS
Bachelor's+
44%
Adults 25+
Poverty rate
6%
Below federal line
Schools in county
83
36,316 students
Quick facts
Related schools
Other schools in Santa Cruz City High
- Santa Cruz HighHigh · 1,093 students
- Soquel HighHigh · 1,074 students
- Harbor HighHigh · 1,013 students
- Mission Hill MiddleMiddle · 510 students
- Branciforte MiddleMiddle · 409 students
- Alternative Family EducationCombined · 110 students
Other schools in Aptos
- Aptos HighHigh · 1,274 students
- Aptos Junior HighMiddle · 587 students
- Valencia ElementaryElementary · 487 students
- Rio del Mar ElementaryElementary · 393 students
- Mar Vista ElementaryElementary · 270 students
Other Delta Charter schools
One other US public school is named Delta Charter. Delta Charter is the 2nd largest of the 2.
- Delta CharterTracy, CA · 772 students
Nearby schools
- Mar Vista Elementary0.3 mi · 270
- New Brighton Middle1.3 mi · 585
- Main Street Elementary1.6 mi · 383
- Soquel Elementary1.7 mi · 337
- Valencia Elementary1.8 mi · 487
- Soquel High1.9 mi · 1,074
Frequently asked questions
About Delta CharterHow many students attend Delta Charter?
Delta Charter enrolls approximately 113 students in grades 09-12.
Is Delta Charter an elementary, middle, or high school?
Delta Charter is a high school covering grades 09-12.
How many teachers does Delta Charter have?
Delta Charter employs 9 FTE teachers, for a student-to-teacher ratio of 13.3:1.
What is the student diversity at Delta Charter?
Student demographics at Delta Charter are roughly 52% White, 38% Hispanic, 1% Black, 5% Two or more.
What district is Delta Charter in?
Delta Charter is part of Santa Cruz City High.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.