Excellent
#107 of 4,742 schools in NY
Top 2% in state
Clarkstown South Senior High School
High School · CLARKSTOWN CENTRAL SCHOOL DISTRICT
31 DEMAREST MILL RD, West Nyack, NY 10994
Enrollment
1,386
Student-Teacher
12.5:1
Score
9.0
Grades
9th – 12th
Enrollment
1,386
Student-Teacher
12.5:1
Score
9.0
Grades
9th – 12th
Data vintage
2022-23
Data vintage2022-23
How this school compares
New York schools
#107 of 4,742
In West Nyack
#1 of 8
public schools
In district
#2 of 15
CLARKSTOWN CENTRAL SCHOOL DISTRICT
Academic performance
9.6 / 10
Excellent
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Clarkstown South Senior High School
High School in West Nyack · grades 9th – 12th. Start here, then compare fit against nearby and district options.
Blue Rock School
0.3 mi away. Use as a geographic alternative in the same move search.
West Nyack Elementary School
0.9 mi away. Use as a geographic alternative in the same move search.
About Clarkstown South Senior High School
Clarkstown South Senior High School is a public high school in West Nyack, NY, part of CLARKSTOWN CENTRAL SCHOOL DISTRICT. Clarkstown South Senior High School serves approximately 1,386 students, and covers grades 9th-12th, and has a 12.5:1 student-teacher ratio. Clarkstown South Senior High School has a current MySchoolScout rating of 9.0 out of 10 and ranks #107 of 4,742 schools in NY.
Structured state assessment records for Clarkstown South Senior High School show 98% math proficiency (multi-year average, 2009-2021) and 96% reading/ELA proficiency (multi-year average, 2009-2021).
- This school 9.0 · Excellent
- District avg 9.0
- NY avg 7.0
Score Breakdown
Full Profile · 4/4 metricsView breakdown
View breakdown
View breakdown
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Clarkstown South Senior High School — Students at Clarkstown South Senior High School score 95% proficient, which is above what's typical for similar communities (expected: 62%).
Equity & Diversity
Shown separately, not included in overall scoreFree/Reduced Lunch
21.5%
Students qualifying for federal meal assistance
Test Scores NY EDFACTS (2020-21)
Based on 26 test records from NY state assessments. About our data
Proficiency Trend
→ StableAverage proficiency (% at or above grade level) across Math & ELA over time.
* COVID-affected year — test participation was uneven nationwide. This data is weighted at 50% in the Growth score calculation.
Source: EdFacts (NCES) and state assessment data. Growth score: 8.5/10.
How Clarkstown South Senior High School Compares
See how Clarkstown South Senior High School performs across key quality dimensions compared to state benchmarks.
Funding & Resources
Programs & Offerings
Data as of 2021-22 · Source: CRDC via Urban Institute · Learn more
Location
31 DEMAREST MILL RD, West Nyack, NY 10994
Nearby Alternatives
Families considering Clarkstown South Senior High School may also want to explore other high schools in the area. VALLEY COTTAGE SCHOOL (rated 8.8/10, 2.2 miles away, in nearby Valley Cottage), with a very similar rating. Another option is NANUET SENIOR HIGH SCHOOL (rated 8.4/10, 1.6 miles away, in nearby Nanuet), with a comparable rating. Additionally, LAUREL PLAINS ELEMENTARY SCHOOL (rated 8.1/10, 1.8 miles away, in nearby New City), with a comparable rating. For more schools in West Nyack, see our West Nyack schools guide .
Nearby Schools
20 within 2.7 mi| School | Distance | Rating |
|---|---|---|
| BLUE ROCK SCHOOL West Nyack | 0.3 mi | 7.0 |
| WEST NYACK ELEMENTARY SCHOOL West Nyack | 0.9 mi | 6.7 |
| BARDONIA ELEMENTARY SCHOOL Bardonia | 0.9 mi | 6.3 |
| ROCKLAND BOCES West Nyack | 1.2 mi | 5.7 |
| FELIX FESTA CHARACTER MIDDLE SCHOOL West Nyack | 1.4 mi | 6.6 |
| FELIX FESTA DETERMINATION MIDDLE SCHOOL West Nyack | 1.4 mi | 7.7 |
| FELIX FESTA ACHIEVEMENT MIDDLE SCHOOL West Nyack | 1.4 mi | 7.6 |
| STRAWTOWN ELEMENTARY SCHOOL West Nyack | 1.4 mi | 7.9 |
| BIRCHWOOD SCHOOL West Nyack | 1.5 mi | 6.7 |
| LAUREL PLAINS ELEMENTARY SCHOOL New City | 1.8 mi | 8.1 |
| A MACARTHUR BARR MIDDLE SCHOOL Nanuet | 1.5 mi | 6.0 |
| NANUET SENIOR HIGH SCHOOL Nanuet | 1.6 mi | 8.4 |
| ST ANTHONY SCHOOL Nanuet | 1.6 mi | 6.9 |
| GEORGE W MILLER ELEMENTARY SCHOOL Nanuet | 1.8 mi | 7.8 |
| HIGHVIEW ELEMENTARY SCHOOL Nanuet | 1.9 mi | 7.5 |
| DAYTOP PREP SCHOOL Blauvelt | 2.2 mi | — |
| VALLEY COTTAGE SCHOOL Valley Cottage | 2.2 mi | 8.8 |
| LINK ELEMENTARY SCHOOL New City | 2.5 mi | 7.3 |
| SOUTH ORANGETOWN MIDDLE SCHOOL Blauvelt | 2.9 mi | 6.4 |
| ST PAUL SCHOOL Valley Cottage | 2.7 mi | 4.8 |
Neighborhood Census ACS (2019-2023)
Census data for ZIP 10994 (ACS 2019-2023 5-Year Estimates) · Data sources
Median Income
$166,838
Median Home Value
$618,900
Median Rent
$1,622/mo
Population
5,925
College Educated
58.8%
Homeownership
97.4%
Avg Commute
28.6 min
Poverty Rate
1.8%
Median Age
51
Similar Schools
Schools in the same state with comparable level, size, and ratings
| School | Rating |
|---|---|
| CLARKSTOWN NORTH SENIOR HIGH SCHOOL New City, NY | 9.0 |
| EASTCHESTER SENIOR HIGH SCHOOL Eastchester, NY | 9.0 |
| GARDEN CITY HIGH SCHOOL Garden City, NY | 9.0 |
| JOHN JAY HIGH SCHOOL Katonah, NY | 9.0 |
| LYNBROOK SENIOR HIGH SCHOOL Lynbrook, NY | 9.0 |
| PELHAM MEMORIAL HIGH SCHOOL Pelham, NY | 9.0 |
Frequently Asked Questions
Common questions about Clarkstown South Senior High School
What grades does Clarkstown South Senior High School serve?
Clarkstown South Senior High School serves students in grades 9th through 12th.
How many students attend Clarkstown South Senior High School?
Clarkstown South Senior High School has an enrollment of approximately 1,386 students.
What is the student-teacher ratio at Clarkstown South Senior High School?
The student-teacher ratio at Clarkstown South Senior High School is 12.5:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.
How does Clarkstown South Senior High School rank in NY?
Clarkstown South Senior High School ranks #107 of 4,742 schools in NY.
What is Clarkstown South Senior High School's MySchoolScout rating?
Clarkstown South Senior High School has a current MySchoolScout rating of 9.0 out of 10. This score combines the level-appropriate components shown in the rating breakdown; equity data is shown separately for context.
What are the test scores at Clarkstown South Senior High School?
Based on loaded state assessment records, Clarkstown South Senior High School has 98% math proficiency (multi-year average, 2009-2021) and 96% reading/ELA proficiency (multi-year average, 2009-2021).
Is Clarkstown South Senior High School a charter school?
No, Clarkstown South Senior High School is not a charter school. It is a traditional public school operated by the local school district.
Is Clarkstown South Senior High School a Title I school?
No, Clarkstown South Senior High School is not currently a Title I school.
What does the Free & Reduced Lunch percentage mean for Clarkstown South Senior High School?
21.5% of students at Clarkstown South Senior High School qualify for free or reduced-price lunch. This is a commonly used indicator of economic need and provides important context when interpreting test scores.
Neighborhood Context
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Quick Facts NCES CCD (SY 2022-23)
- Grades
- 9th – 12th
- Enrollment
- 1,386
- Student-Teacher Ratio
- 12.5:1
- Teachers (FTE)
- 111
- Free/Reduced Lunch
- 21.5%
- Type
- regular
- Setting
- Large Suburb
- County
- Rockland County
- Chronic Absenteeism (SY 2022-23)
- 17.5%
- Phone
- (845) 624-3400
- 4-Year Graduation
- 98.0%
Resources & Links
District
CLARKSTOWN CENTRAL SCHOOL DISTRICT- District Enrollment
- 7,991
- Schools in District
- 16
- Per-Pupil Spending
- $28,785
- District Rank
- #2 of 15
How we rate schools
A clear 1–10 score built from public data — growth, academics, and learning environment. No hidden criteria, no pay-to-play.
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