Enrollment
1,386
New York · 2024-25 NCES data
High school (grades 9-12) · West Nyack, NY
Clarkstown South Senior High School
Federal NCES profile for Clarkstown South Senior High School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 59/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 362034001865
👥 S:T ratio 50
📚 AP courses 100
🌟 Gifted program 30
🎓 Counselors 59
📋 Attendance 55
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Clarkstown South Senior High School earns 59/100 on the Resource Investment Index, with class sizes near the New York median. It is also one of the largest schools in New York.
- #7 of 8
- public schools in West Nyack · Resource Index
- 59
- Resource Index · Higher
- 12.6:1
- students per teacher
- 13.4%
- free-lunch eligible
Clarkstown South Senior High School has class sizes near the New York median. Computed live against every New York school reporting to NCES.
By Resource Investment Index, Clarkstown South Senior High School ranks #7 of 8 public schools in West Nyack, NY.
School address
District: Clarkstown Central School District · New York
NCES ID 362034001865 Verify on NCES CCD record →
Teachers (FTE)
110.0
Federal CCD staff survey
Students per teacher
12.6:1
vs 11.8:1 New York avg
+7% vs state
Free-lunch eligible
13.4%
vs 56.2% New York avg
-76% vs state
Student-teacher ratio in context
How Clarkstown South Senior High School compares with New York and U.S. medians
What stands out at Clarkstown South Senior High School
Clarkstown South Senior High School is a lower-poverty, large high school in West Nyack, New York, enrolling 1,386 students.
Class loads run somewhat heavier than typical: 12.6:1 puts it in the larger third of New York schools by student-teacher ratio.
Comparatively few students face economic hardship here, 13.4% free-meal eligibility runs 76% below the New York average.
By headcount it is one of the larger campuses in New York, bigger than 97% of state schools at 1,386 students.
Its Resource Investment Index lands in the upper third of 4,801 scored New York schools.
Against 130 statewide peers matched on enrollment and economic need, it ranks mid-pack at #69.
Its student body is led by White (49%) and Hispanic or Latino (26%), more mixed than most schools in the state (diversity index 66/100).
On the academic-pipeline side it reports 26 Advanced Placement courses.
Counselor coverage is strong, about 204 students per counselor, inside the American School Counselor Association's recommended 250:1.
17.8% of students were chronically absent in the 2021-22 collection, in line with the post-pandemic national range.
Clarkstown Central School District also operates Clarkstown North Senior High School (1,209 students) and Felix Festa Determination Middle School (679 students) alongside Clarkstown South Senior High School.
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 Clarkstown South Senior High School compares
Clarkstown South Senior High School on the metrics families compare, against New York and U.S. means.
| Metric | This school | vs New York | New York avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 12.6:1 | ▲ 7% | 11.8:1 | 15.7:1 |
| Free-lunch eligible | 13.4% | ▼ 76% | 56.2% | 51.7% |
| Enrollment | 1,386 | top 3% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
12.6:1
Leaner classes than 70% of US schools, among the more generously staffed nationally.
1,386
Bigger than 95% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Economic need
13.4%
free-lunch eligible
- 76% below the New York average of 56.2%
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
12.6:1
students per teacher
- 7% above state mean
Top 67% in New York - lower ratio than 33% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
17.8%
chronically absent (missed 10%+ of school days)
In the 15-20% range, nearing the "high" absenteeism threshold.
Funding equity
$27,568
per pupil, district-wide
- above New York avg of $26,410
Well above the U.S. public-school average, reflecting substantially higher local or state investment per enrolled student.
Support staff
Counselors6.8 FTE
Per 204 students, the combined health-and-guidance staffing load for this school.
Discipline context
34
in-school suspensions + 50 out-of-school
Suspension rate: 2.5 per 100 students. Combined in-school and out-of-school rate: 6.1 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 49.2%
Hispanic or Latino 26.4%
Asian 15.5%
African American 6.5%
Two or More 2.2%
American Indian / Alaska Native 0.1%
Native Hawaiian / Pacific Islander 0.1%
Largest group: White at 49.2% of enrollment.
Student-body diversity index 66.0/100
Simpson diversity index - at 66.0, Clarkstown South Senior High School is more mixed than the New York school average of 45.5.
Programs
AP courses offered 26
Funding & spending
District-wide per-pupil expenditure for Clarkstown Central School District, which includes Clarkstown South Senior High School.
$27,568
Per student
+4%
vs New York
Avg $26,410
+66%
vs U.S.
Avg $16,593
Revenue mix
Local 71.2%
State 21.8%
Federal 7.0%
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 Clarkstown South Senior High School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Clarkstown North Senior High School | Similar size | Similar economic need | Lower S:T ratio |
| Felix Festa Determination Middle School | Smaller | Similar economic need | Similar S:T ratio |
| Felix Festa Character Middle School | Smaller | Similar economic need | Similar S:T ratio |
| Felix Festa Achievement Middle School | Smaller | Similar economic need | Lower S:T ratio |
| New City Elementary School | Smaller | No free-lunch data | Similar S:T ratio |
Comparisons are relative to Clarkstown South Senior High School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,209
- Students per teacher
- 10.3:1
- Resource Index
- 48/100
- Enrollment
- 679
- Students per teacher
- 13.6:1
- Resource Index
- 48/100
- Enrollment
- 612
- Students per teacher
- 11.8:1
- Resource Index
- 52/100
- Enrollment
- 609
- Students per teacher
- 10.9:1
- Resource Index
- 52/100
- Enrollment
- 446
- Students per teacher
- 11.4:1
- Resource Index
- 63/100
Similar high schools statewide
Matched by enrollment size and by staffing ratio across all of New York, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~1,386 students)
Next steps
Verify locally before acting on Clarkstown South Senior High School's federal record.
- Compare Clarkstown South Senior High School against another school. Compare schools
- Clarkstown Central School 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 Clarkstown South Senior High School
How many students attend Clarkstown South Senior High School?
Clarkstown South Senior High School has 1,386 students enrolled. It is a high school in West Nyack, NY.
What is the student-teacher ratio at Clarkstown South Senior High School?
The student-teacher ratio at Clarkstown South Senior High School is 12.6:1, which is 7% higher than the New York average of 11.8:1 and 20% lower than the national average of 15.7:1.
What percentage of students receive free lunch at Clarkstown South Senior High School?
13.4% of students at Clarkstown South Senior High School are eligible for free lunch, compared to the New York average of 56.2%.
What is the racial and ethnic makeup of Clarkstown South Senior High School?
The largest demographic group at Clarkstown South Senior High School is White at 49.2% of enrollment, in West Nyack, NY. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 66.0/100.
What is the Resource Investment Index for Clarkstown South Senior High School?
Clarkstown South Senior High School has a Resource Investment Index of 59/100 (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 Clarkstown South Senior High School rank among public schools in West Nyack?
By Resource Investment Index, Clarkstown South Senior High School ranks #7 of 8 public schools in West Nyack, NY. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all public schools in West Nyack on the city page.
Is Clarkstown South Senior High School a good school?
Clarkstown South Senior High School earns 59/100 on the Resource Investment Index, with class sizes near the New York median. It is also one of the largest schools in New York. 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 Clarkstown Central School District?
Besides Clarkstown South Senior High School, Clarkstown Central School District also operates Clarkstown North Senior High School (1,209 students), Felix Festa Determination Middle School (679 students), and Felix Festa Character Middle School (612 students). See the Clarkstown Central School District 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.