Enrollment
2,346
California · 2024-25 NCES data
Other / mixed grade configuration · Santa Ana, CA
Ocsa
Federal NCES profile for Ocsa, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 37/100.
2024-25 NCES dataOther / mixed grade configurationNCES 060228408546Charter school
👥 S:T ratio 29
🌟 Gifted program 30
🎓 Counselors 22
📋 Attendance 69
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Ocsa earns 37/100 on the Resource Investment Index, with class sizes smaller than 80% of California schools. It is also one of the largest schools in California.
- #5 of 8
- schools in Santa Ana · Resource Index
- 37
- Resource Index · Typical
- 17.8:1
- small classes for California
- 12.4%
- free-lunch eligible
Ocsa has class sizes smaller than 80% of California schools. Computed live against every California school reporting to NCES.
By Resource Investment Index, Ocsa ranks #5 of 8 schools in Santa Ana, CA.
School address
District: Ocsa District · California
NCES ID 060228408546 Verify on NCES CCD record →
Teachers (FTE)
132.0
Federal CCD staff survey
Students per teacher
17.8:1
vs 21.5:1 California avg
-17% vs state
Free-lunch eligible
12.4%
vs 55.5% California avg
-78% vs state
Student-teacher ratio in context
How Ocsa compares with California and U.S. medians
What stands out at Ocsa
Ocsa is a lower-poverty, large charter combined-grade school in Santa Ana, California, enrolling 2,346 students.
Class sizes run a bit leaner than typical: 17.8:1 puts it in the smaller third of California schools by student-teacher ratio.
Comparatively few students face economic hardship here, 12.4% free-meal eligibility runs 78% below the California average.
By headcount it is one of the larger campuses in California, bigger than 98% of state schools at 2,346 students.
Its Resource Investment Index lands in the upper third of 9,998 scored California schools.
Against 166 statewide peers matched on enrollment and economic need, it ranks in the upper tier at #63.
Its student body is led by Asian (44%) and White (23%), more mixed than most schools in the state (diversity index 70/100).
Counselor availability sits well past the ASCA benchmark, roughly 391 students sharing each counselor, though short of the most stretched campuses.
12.6% of students were chronically absent in the 2021-22 collection, in line with the post-pandemic national range.
Among Santa Ana's public schools, it stands alongside Saddleback High (1,451 students): Ocsa is larger than that campus by headcount and runs leaner classes (17.8:1 vs 19.6:1).
Ocsa District is a single-school charter district, so Ocsa operates independently rather than alongside district-mates. At 2,346 students, it is also among the largest single-school districts in California, well beyond the enrollment of a typical standalone 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 Ocsa compares
Ocsa on the metrics families compare, against California and U.S. means.
| Metric | This school | vs California | California avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 17.8:1 | ▼ 17% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 12.4% | ▼ 78% | 55.5% | 51.7% |
| Enrollment | 2,346 | top 2% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
17.8:1
Leaner classes than 26% of US schools, heavier class loads than most.
2,346
Bigger than 99% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Economic need
12.4%
free-lunch eligible
- 78% below the California average of 55.5%
Below the 40% Title I threshold, among the lower-need profiles in the state; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
17.8:1
students per teacher
- 17% below state mean
Top 20% in California - lower ratio than 80% of state schools
Between 16:1 and 20:1, squarely in the typical U.S. public-school staffing range.
Engagement
12.6%
chronically absent (missed 10%+ of school days)
In the 10-15% range, above the pre-pandemic national baseline but within the broader post-pandemic picture.
Funding equity
$18,400
per pupil, district-wide
- above California avg of $16,509
Somewhat above the U.S. public-school average, reflecting higher local or state investment per enrolled student.
Support staff
Counselors6.0 FTE
Per 391 students, the combined health-and-guidance staffing load for this school.
Discipline context
3
in-school suspensions + 15 out-of-school
Suspension rate: 0.1 per 100 students. Combined in-school and out-of-school rate: 0.8 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
Asian 44.0%
White 23.2%
Hispanic or Latino 21.0%
Two or More 10.6%
African American 0.7%
Native Hawaiian / Pacific Islander 0.4%
American Indian / Alaska Native 0.1%
Largest group: Asian at 44.0% of enrollment.
Student-body diversity index 69.7/100
Simpson diversity index - at 69.7, Ocsa is more mixed than the California school average of 46.0.
Programs
AP courses offered 20
Funding & spending
District-wide per-pupil expenditure for Ocsa District, which includes Ocsa.
$18,400
Per student
+11%
vs California
Avg $16,509
+11%
vs U.S.
Avg $16,593
Revenue mix
Local 54.9%
State 41.8%
Federal 3.3%
Source: NCES F-33 School District Finance Survey District-level finance · FY 2021-22 Per-pupil expenditure reflects the district-wide average. Individual school budgets are not reported at the federal level.
Similar other schools in Santa Ana
6 comparable other schools (grades Mixed) serving the same city.
Saddleback High
Standard public school
1,451 students 19.6:1 students per teacher
Samueli Academy
Standard public school
842 students 21.6:1 students per teacher
Magnolia Science Academy Santa Ana
Standard public school
524 students 16.9:1 students per teacher
Citrus Springs Charter
Standard public school
477 students 29.8:1 students per teacher
Vista Heritage Global Academy
Standard public school
369 students 20.5:1 students per teacher
Advanced Learning Academy
Standard public school
363 students 12.5:1 students per teacher
Similar other 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 (~2,346 students)
Next steps
Verify locally before acting on Ocsa's federal record.
- Compare Ocsa against another school. Compare schools
- Ocsa District'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 Ocsa
How many students attend Ocsa?
Ocsa has 2,346 students enrolled. It is a public school in Santa Ana, CA.
What is the student-teacher ratio at Ocsa?
The student-teacher ratio at Ocsa is 17.8:1, which is 17% lower than the California average of 21.5:1 and 13% higher 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 Ocsa?
12.4% of students at Ocsa are eligible for free lunch, compared to the California average of 55.5%.
What is the racial and ethnic makeup of Ocsa?
The largest demographic group at Ocsa is Asian at 44.0% of enrollment, in Santa Ana, CA. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 69.7/100.
What is the Resource Investment Index for Ocsa?
Ocsa has a Resource Investment Index of 37/100 (typical reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, AP course offerings, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Ocsa rank among schools in Santa Ana?
By Resource Investment Index, Ocsa ranks #5 of 8 schools in Santa Ana, CA. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all schools in Santa Ana on the city page.
Is Ocsa a good school?
Ocsa earns 37/100 on the Resource Investment Index, with class sizes smaller than 80% of California schools. It is also one of the largest schools in California. 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 Ocsa District?
None; Ocsa District is a single-school charter district, and Ocsa is its only campus.
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.