Enrollment
1,033
California · 2024-25 NCES data
High school (grades 9-12) · Simi Valley, CA
Santa Susana High
Federal NCES profile for Santa Susana High, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 57/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 063684006815
👥 S:T ratio 8
📚 AP courses 100
🌟 Gifted program 70
🎓 Counselors 48
📋 Attendance 60
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Santa Susana High earns 57/100 on the Resource Investment Index, with class sizes near the California median. It is also more racially and ethnically mixed than most California schools.
- #2 of 5
- high schools in Simi Valley · Resource Index
- 57
- Resource Index · Higher
- 23:1
- students per teacher
- 22.6%
- free-lunch eligible
Santa Susana High has class sizes near the California median. Computed live against every California school reporting to NCES.
By Resource Investment Index, Santa Susana High ranks #2 of 5 high schools in Simi Valley, CA.
School address
District: Simi Valley Unified · California
NCES ID 063684006815 Verify on NCES CCD record →
Teachers (FTE)
45.0
Federal CCD staff survey
Students per teacher
23:1
vs 21.5:1 California avg
+7% vs state
Free-lunch eligible
22.6%
vs 55.5% California avg
-59% vs state
Student-teacher ratio in context
How Santa Susana High compares with California and U.S. medians
What stands out at Santa Susana High
Santa Susana High is a large high school in Simi Valley, California, enrolling 1,033 students.
Class loads run somewhat heavier than typical: 23:1 puts it in the larger third of California schools by student-teacher ratio.
Comparatively few students face economic hardship here, 22.6% free-meal eligibility runs 59% below the California average.
Enrollment of 1,033 puts it in the larger third of California schools by headcount.
Its Resource Investment Index lands in the upper third of 9,998 scored California schools.
Among 727 similarly sized, similarly resourced-need California schools statewide, it ranks #52, a top-tier result once campus size and economic need are matched.
Its student body is led by White (37%) and Hispanic or Latino (33%), more mixed than most schools in the state (diversity index 70/100).
On the academic-pipeline side it reports 25 Advanced Placement courses.
Counselor coverage runs a bit thin, about 258 students per counselor, somewhat past the ASCA-recommended 250:1 benchmark.
16.1% of students were chronically absent in the 2021-22 collection, in line with the post-pandemic national range.
Among Simi Valley's high schools, it stands alongside Simi Valley High (1,910 students): Santa Susana High is smaller than that campus by headcount and runs leaner classes (23:1 vs 23.3:1).
Simi Valley Unified also operates Simi Valley High (1,910 students) and Royal High (1,835 students) alongside Santa Susana 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 Santa Susana High compares
Santa Susana 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 | 23:1 | ▲ 7% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 22.6% | ▼ 59% | 55.5% | 51.7% |
| Enrollment | 1,033 | top 11% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
23:1
Leaner classes than 8% of US schools, heavier class loads than most.
1,033
Bigger than 92% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Economic need
22.6%
free-lunch eligible
- 59% 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
23:1
students per teacher
- 7% above state mean
Top 62% in California - lower ratio than 38% of state schools
Above 20:1, running heavier than the typical U.S. public school; staffing is comparatively stretched.
Engagement
16.1%
chronically absent (missed 10%+ of school days)
In the 15-20% range, nearing the "high" absenteeism threshold.
Funding equity
$13,320
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 258 students, the combined health-and-guidance staffing load for this school.
Discipline context
9
in-school suspensions + 22 out-of-school
Suspension rate: 0.9 per 100 students. Combined in-school and out-of-school rate: 3.0 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 37.0%
Hispanic or Latino 33.1%
Asian 22.9%
Two or More 5.2%
African American 1.4%
American Indian / Alaska Native 0.2%
Native Hawaiian / Pacific Islander 0.2%
Largest group: White at 37.0% of enrollment.
Student-body diversity index 69.8/100
Simpson diversity index - at 69.8, Santa Susana High is more mixed than the California school average of 46.0.
Programs
AP courses offered 25
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for Simi Valley Unified, which includes Santa Susana High.
$13,320
Per student
-19%
vs California
Avg $16,509
-20%
vs U.S.
Avg $16,593
Revenue mix
Local 45.6%
State 46.3%
Federal 8.1%
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 Santa Susana High Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Simi Valley High | Larger | Similar economic need | Similar S:T ratio |
| Royal High | Larger | Higher economic need | Lower S:T ratio |
| Valley View Middle | Larger | Similar economic need | Higher S:T ratio |
| Hillside Middle | Similar size | Similar economic need | Higher S:T ratio |
| Sinaloa Middle | Similar size | Higher economic need | Higher S:T ratio |
Comparisons are relative to Santa Susana High's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,910
- Students per teacher
- 23.3:1
- Resource Index
- 37/100
- Enrollment
- 1,835
- Students per teacher
- 20.6:1
- Resource Index
- 38/100
- Enrollment
- 1,329
- Students per teacher
- 30.2:1
- Resource Index
- 31/100
- Enrollment
- 1,138
- Students per teacher
- 29.9:1
- Resource Index
- 33/100
- Enrollment
- 843
- Students per teacher
- 25.5:1
- Resource Index
- 29/100
Similar high schools in Simi Valley
4 comparable high schools (grades 9-12) serving the same city.
Simi Valley High
Standard public school
1,910 students 23.3:1 students per teacher
Royal High
Standard public school
1,835 students 20.6:1 students per teacher
Insight School of California
Standard public school
458 students 50.9:1 students per teacher
Apollo High
Alternative education program
88 students 8:1 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 (~1,033 students)
Similar student-teacher ratio (~23:1)
Next steps
Verify locally before acting on Santa Susana High's federal record.
- Compare Santa Susana High against another school. Compare schools
- Simi Valley Unified'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 Santa Susana High
How many students attend Santa Susana High?
Santa Susana High has 1,033 students enrolled. It is a high school in Simi Valley, CA.
What is the student-teacher ratio at Santa Susana High?
The student-teacher ratio at Santa Susana High is 23:1, which is 7% higher than the California average of 21.5:1 and 46% higher than the national average of 15.7:1.
What percentage of students receive free lunch at Santa Susana High?
22.6% of students at Santa Susana High are eligible for free lunch, compared to the California average of 55.5%.
What is the racial and ethnic makeup of Santa Susana High?
The largest demographic group at Santa Susana High is White at 37.0% of enrollment, in Simi Valley, CA. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 69.8/100.
What is the Resource Investment Index for Santa Susana High?
Santa Susana High has a Resource Investment Index of 57/100 (higher 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 Santa Susana High rank among high schools in Simi Valley?
By Resource Investment Index, Santa Susana High ranks #2 of 5 high schools in Simi Valley, 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 Simi Valley on the city page.
Is Santa Susana High a good school?
Santa Susana High earns 57/100 on the Resource Investment Index, with class sizes near the California median. It is also more racially and ethnically mixed than most 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 Simi Valley Unified?
Besides Santa Susana High, Simi Valley Unified also operates Simi Valley High (1,910 students), Royal High (1,835 students), and Valley View Middle (1,329 students). See the Simi Valley Unified 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.