Enrollment
113
California · 2024-25 NCES data
High school (grades 9-12) · Aptos, CA
Delta Charter
Federal NCES profile for Delta Charter, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 32/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 063560006664Charter school
👥 S:T ratio 44
📚 AP courses 10
🌟 Gifted program 30
🎓 Counselors 77
📋 Attendance 0
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Delta Charter earns 32/100 on the Resource Investment Index, with class sizes smaller than 91% of California schools.
- #1 of 6
- public schools in Aptos · Resource Index
- 32
- Resource Index · Typical
- 14.1:1
- small classes for California
- 30.2%
- free-lunch eligible
Delta Charter has class sizes smaller than 91% of California schools. Computed live against every California school reporting to NCES.
By Resource Investment Index, Delta Charter ranks #1 of 6 public schools in Aptos, CA.
School address
District: Santa Cruz City High · California
NCES ID 063560006664 Verify on NCES CCD record →
Teachers (FTE)
8.0
Federal CCD staff survey
Students per teacher
14.1:1
vs 21.5:1 California avg
-34% vs state
Free-lunch eligible
30.2%
vs 55.5% California avg
-46% vs state
Student-teacher ratio in context
How Delta Charter compares with California and U.S. medians
What stands out at Delta Charter
Delta Charter is a small charter high school in Aptos, California, enrolling 113 students.
Classes run notably small here: at 14.1:1, Delta Charter is leaner than roughly 91% of California schools and 34% under the state's 21.5:1 norm, more adult attention per pupil than most peers.
Economic need runs somewhat below the state's typical profile, with 30.2% of students eligible for free meals.
Enrollment of 113 puts it in the smaller third of California schools by headcount.
Its Resource Investment Index lands in the upper third of 9,998 scored California schools.
Against 149 statewide peers matched on enrollment and economic need, it ranks in the upper tier at #61.
Its student body is led by White (53%) and Hispanic or Latino (39%) (diversity index 56/100).
No Advanced Placement courses are reported for this campus in the federal data.
Counselor coverage is strong, about 113 students per counselor, inside the American School Counselor Association's recommended 250:1.
Chronic absenteeism is elevated: 57.5% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
Among Aptos's high schools, it stands alongside Aptos High (1,274 students): Delta Charter is smaller than that campus by headcount and runs leaner classes (14.1:1 vs 19.6:1).
Santa Cruz City High also operates Santa Cruz High (1,093 students) and Soquel High (1,074 students) alongside Delta Charter.
Sourced from NCES CCD, CRDC, and F-33 (federal records, not a quality verdict). How we source and compute this.
Source: National Center for Education Statistics Common Core of Data + CRDC + F-33 · 2024-25
How Delta Charter compares
Delta Charter on the metrics families compare, against California and U.S. means.
| Metric | This school | vs California | California avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 14.1:1 | ▼ 34% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 30.2% | ▼ 46% | 55.5% | 51.7% |
| Enrollment | 113 | top 89% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
14.1:1
Leaner classes than 56% of US schools, a middle-of-the-pack class size.
113
Bigger than 11% of US schools by enrollment, a small campus.
Equity indicators (what these measure)
Economic need
30.2%
free-lunch eligible
- 46% below the California average of 55.5%
Below the 40% Title I threshold; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
14.1:1
students per teacher
- 34% below state mean
Top 9% in California - lower ratio than 91% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
57.5%
chronically absent (missed 10%+ of school days)
At or above 20%, the commonly used threshold for "high" chronic absenteeism, signaling significant barriers to regular attendance.
Support staff
Counselors1.0 FTE
Per 113 students, the combined health-and-guidance staffing load for this school.
Discipline context
0
in-school suspensions + 3 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 2.7 per 100 students. Reported via the Civil Rights Data Collection.
Overview
- Common Core of Data (June 2026): enrollment, staffing, and the student-teacher ratio above.
- Civil Rights Data Collection: discipline counts and program access (AP, gifted, special education).
- F-33 School District Finance Survey: the district-wide per-pupil spending figures below.
Three separate federal collections, each on its own reporting cadence - which is why this school's numbers line up on a consistent basis against every other school and state on this site, rather than mixing figures pulled from different survey years.
Student demographics
White 53.2%
Hispanic or Latino 38.7%
Two or More 5.4%
American Indian / Alaska Native 1.8%
African American 0.9%
Largest group: White at 53.2% of enrollment.
Student-body diversity index 56.4/100
Simpson diversity index - at 56.4, Delta Charter is more mixed than the California school average of 46.0.
Programs
AP program Not offered
How Delta Charter Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Santa Cruz High | Larger | Similar economic need | Higher S:T ratio |
| Soquel High | Larger | Similar economic need | Higher S:T ratio |
| Harbor High | Larger | Similar economic need | Higher S:T ratio |
| Mission Hill Middle | Larger | Similar economic need | Higher S:T ratio |
| Branciforte Middle | Larger | Similar economic need | Higher S:T ratio |
Comparisons are relative to Delta Charter's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,093
- Students per teacher
- 21.4:1
- Resource Index
- 30/100
- Enrollment
- 1,074
- Students per teacher
- 23.3:1
- Resource Index
- 31/100
- Enrollment
- 1,013
- Students per teacher
- 18.8:1
- Resource Index
- 30/100
- Enrollment
- 510
- Students per teacher
- 18.9:1
- Resource Index
- 33/100
- Enrollment
- 409
- Students per teacher
- 19.5:1
- Resource Index
- 35/100
Similar high schools in Aptos
1 comparable high schools (grades 9-12) serving the same city.
Similar high schools statewide
Matched by enrollment size and by staffing ratio across all of California, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~113 students)
Next steps
Verify locally before acting on Delta Charter's federal record.
- Compare Delta Charter against another school. Compare schools
- Santa Cruz City High's spending and staffing shape this school. District profile
- Confirm current enrollment and boundaries with the school. Choosing guide
Federal record (CCD 2024-25, CRDC 2021-22) - PlainSchools assigns no subjective rating; the composite quality score is a transparent, reproducible index computed from this cited federal data.
Frequently asked questions about Delta Charter
How many students attend Delta Charter?
Delta Charter has 113 students enrolled. It is a high school in Aptos, CA.
What is the student-teacher ratio at Delta Charter?
The student-teacher ratio at Delta Charter is 14.1:1, which is 34% lower than the California average of 21.5:1 and 10% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
What percentage of students receive free lunch at Delta Charter?
30.2% of students at Delta Charter are eligible for free lunch, compared to the California average of 55.5%.
What is the racial and ethnic makeup of Delta Charter?
The largest demographic group at Delta Charter is White at 53.2% of enrollment, in Aptos, CA. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 56.4/100.
What is the Resource Investment Index for Delta Charter?
Delta Charter has a Resource Investment Index of 32/100 (typical reported resources relative to schools nationally) based on 5 factors: student-teacher ratio, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Delta Charter rank among public schools in Aptos?
By Resource Investment Index, Delta Charter ranks #1 of 6 public schools in Aptos, CA. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all public schools in Aptos on the city page.
Is Delta Charter a good school?
Delta Charter earns 32/100 on the Resource Investment Index, with class sizes smaller than 91% of California schools. This is a resource snapshot, not an academic rating; see the Resource Investment Index question above for what the number does and doesn't measure.
What other schools are in Santa Cruz City High?
Besides Delta Charter, Santa Cruz City High also operates Santa Cruz High (1,093 students), Soquel High (1,074 students), and Harbor High (1,013 students). See the Santa Cruz City High district page for the complete list.
Related tools
Every figure on PlainSchools is rendered directly from the source NCES, CRDC and F-33 federal records, no number is typed in by an editor. Each school's figures reflect its most recent NCES/CRDC submission on file. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of June 2026.