Enrollment
1,880
California · 2024-25 NCES data
High school (grades 9-12) · Fullerton, CA
Fullerton Union High
Federal NCES profile for Fullerton Union High, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 33/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 061476001810
👥 S:T ratio 0
📚 AP courses 85
🌟 Gifted program 30
🎓 Counselors 6
📋 Attendance 43
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Fullerton Union High earns 33/100 on the Resource Investment Index, with class sizes larger than 80% of California schools. It is also one of the largest schools in California.
- #5 of 5
- high schools in Fullerton · Resource Index
- 33
- Resource Index · Typical
- 25.1:1
- large classes for California
- 50.1%
- free-lunch eligible
Fullerton Union High has class sizes larger than 80% of California schools. Computed live against every California school reporting to NCES.
By Resource Investment Index, Fullerton Union High ranks #5 of 5 high schools in Fullerton, CA.
School address
District: Fullerton Joint Union High · California
NCES ID 061476001810 Verify on NCES CCD record →
Teachers (FTE)
75.0
Federal CCD staff survey
Students per teacher
25.1:1
vs 21.5:1 California avg
+17% vs state
Free-lunch eligible
50.1%
vs 55.5% California avg
-10% vs state
Student-teacher ratio in context
How Fullerton Union High compares with California and U.S. medians
What stands out at Fullerton Union High
Fullerton Union High is a higher-need, large high school in Fullerton, California, enrolling 1,880 students.
Class loads run somewhat heavier than typical: 25.1:1 puts it in the larger third of California schools by student-teacher ratio.
Its free-meal eligibility rate of 50.1% lands close to the California typical range, neither a high- nor low-need campus by this measure.
By headcount it is one of the larger campuses in California, bigger than 96% of state schools at 1,880 students.
Its Resource Investment Index lands in the lower third of 9,998 scored California schools.
Among 310 similarly sized, similarly resourced-need California schools statewide, it ranks #278, in the lower tier once campus size and economic need are matched.
Its student body is led by Hispanic or Latino (68%) and White (17%) (diversity index 50/100).
On the academic-pipeline side it reports 17 Advanced Placement courses.
Counselor access is stretched at roughly 470 students per counselor, well above the ASCA-recommended 250:1 ceiling.
Attendance runs somewhat below the norm, with 22.6% of students chronically absent per the 2021-22 civil-rights collection.
The federal civil-rights collection also records 1 expulsion at this campus for 2021-22.
Among Fullerton's high schools, it stands alongside Troy High (2,504 students): Fullerton Union High is smaller than that campus by headcount and runs heavier classes (25.1:1 vs 23:1).
Fullerton Joint Union High also operates Troy High (2,504 students) and Sunny Hills High (2,337 students) alongside Fullerton Union High.
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 Fullerton Union High compares
Fullerton Union High on the metrics families compare, against California and U.S. means.
| Metric | This school | vs California | California avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 25.1:1 | ▲ 17% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 50.1% | ▼ 10% | 55.5% | 51.7% |
| Enrollment | 1,880 | top 4% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
25.1:1
Leaner classes than 5% of US schools, heavier class loads than most.
1,880
Bigger than 98% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Economic need
50.1%
free-lunch eligible
- 10% below the California average of 55.5%
Above the 40% Title I schoolwide threshold; federal funds support the whole school, not individual students.
Staffing depth
25.1:1
students per teacher
- 17% above state mean
Top 80% in California - lower ratio than 20% of state schools
Well above 20:1, one of the more stretched staffing loads nationally relative to enrollment.
Engagement
22.6%
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.
Funding equity
$14,663
per pupil, district-wide
- below California avg of $16,509
Somewhat below the U.S. average per-pupil spend; funding constraints may affect programs, facilities, and staffing.
Support staff
Counselors4.0 FTE
Per 470 students, the combined health-and-guidance staffing load for this school.
Discipline context
10
in-school suspensions + 91 out-of-school
Suspension rate: 0.5 per 100 students. Combined in-school and out-of-school rate: 5.4 per 100 students. Reported via the Civil Rights Data Collection. Includes 1 expulsion.
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
Hispanic or Latino 67.7%
White 17.1%
Asian 7.6%
Two or More 6.4%
African American 1.0%
American Indian / Alaska Native 0.1%
Native Hawaiian / Pacific Islander 0.1%
Largest group: Hispanic or Latino at 67.7% of enrollment.
Student-body diversity index 50.2/100
Simpson diversity index - at 50.2, Fullerton Union High is more mixed than the California school average of 46.0.
Programs
AP courses offered 17
Funding & spending
District-wide per-pupil expenditure for Fullerton Joint Union High, which includes Fullerton Union High.
$14,663
Per student
-11%
vs California
Avg $16,509
-12%
vs U.S.
Avg $16,593
Revenue mix
Local 50.4%
State 41.3%
Federal 8.3%
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.
How Fullerton Union High Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Troy High | Larger | Lower economic need | Lower S:T ratio |
| Sunny Hills High | Similar size | Lower economic need | Similar S:T ratio |
| La Habra High | Similar size | Similar economic need | Lower S:T ratio |
| Sonora High | Similar size | Similar economic need | Similar S:T ratio |
| Buena Park High | Similar size | Higher economic need | Lower S:T ratio |
Comparisons are relative to Fullerton Union High's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 2,504
- Students per teacher
- 23:1
- Resource Index
- 33/100
- Enrollment
- 2,337
- Students per teacher
- 26:1
- Resource Index
- 29/100
- Enrollment
- 1,881
- Students per teacher
- 22.7:1
- Resource Index
- 24/100
- Enrollment
- 1,779
- Students per teacher
- 24.7:1
- Resource Index
- 24/100
- Enrollment
- 1,682
- Students per teacher
- 22.7:1
- Resource Index
- 24/100
Similar high schools in Fullerton
4 comparable high schools (grades 9-12) serving the same city.
Troy High
Standard public school
2,504 students 23:1 students per teacher
Sunny Hills High
Standard public school
2,337 students 26:1 students per teacher
La Vista High (Continuation)
Alternative education program
298 students 14.9:1 students per teacher
La Sierra High (Alternative)
Alternative education program
236 students 10.7:1 students per teacher
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 (~1,880 students)
Next steps
Verify locally before acting on Fullerton Union High's federal record.
- Compare Fullerton Union High against another school. Compare schools
- Fullerton Joint Union 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 Fullerton Union High
How many students attend Fullerton Union High?
Fullerton Union High has 1,880 students enrolled. It is a high school in Fullerton, CA.
What is the student-teacher ratio at Fullerton Union High?
The student-teacher ratio at Fullerton Union High is 25.1:1, which is 17% higher than the California average of 21.5:1 and 60% higher than the national average of 15.7:1.
What percentage of students receive free lunch at Fullerton Union High?
50.1% of students at Fullerton Union High are eligible for free lunch, compared to the California average of 55.5%.
What is the racial and ethnic makeup of Fullerton Union High?
The largest demographic group at Fullerton Union High is Hispanic or Latino at 67.7% of enrollment, in Fullerton, CA. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 50.2/100.
What is the Resource Investment Index for Fullerton Union High?
Fullerton Union High has a Resource Investment Index of 33/100 (typical reported resources relative to schools nationally) based on 5 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 Fullerton Union High rank among high schools in Fullerton?
By Resource Investment Index, Fullerton Union High ranks #5 of 5 high schools in Fullerton, CA. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all high schools in Fullerton on the city page.
Is Fullerton Union High a good school?
Fullerton Union High earns 33/100 on the Resource Investment Index, with class sizes larger 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 Fullerton Joint Union High?
Besides Fullerton Union High, Fullerton Joint Union High also operates Troy High (2,504 students), Sunny Hills High (2,337 students), and La Habra High (1,881 students). See the Fullerton Joint Union 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.