Excellent
#107 of 4,742 schools in NY
Top 2% in state
Clarkstown South Senior High School
High School · Clarkstown Central School District · West Nyack, NY
A Clarkstown Central School District high school where students score 33 points above what's typical for similar communities.
31 DEMAREST MILL RD, West Nyack, NY 10994
- Math 100% proficient (2021)
- Reading 90% proficient (2021)
- 98.0% 4-year graduation
Academics
Full Profile · 4/4 metricsView breakdown
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Students at Clarkstown South Senior High School score 95% proficient, which is above what's typical for similar communities (expected: 62%).
2021 EdFacts proficiency
Most recent published year. School vs. NY average.
Trend
→ SteadyProficiency has held near 95% across the 13-year record (2009–2021).
Show all 13 years
Multi-year averages used by the rating model: math 98% (multi-year average, 2009-2021) · reading/ELA 96% (multi-year average, 2009-2021)
* COVID-affected year — test participation was uneven nationwide. This data is weighted at 50% in the Growth score calculation.
Based on 26 test records from NY state assessments and EdFacts (NCES).
Equity & diversity
Shown separately, not included in the overall scoreFree/reduced lunch
21.5%
Students qualifying for federal meal assistance
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.
See how we rateThe neighborhood
Where Clarkstown South Senior High School sits, and what the surrounding area looks like.
Nearby same-level schools are colored by their score. Pins are locations, not attendance boundaries. Open the New York map →
Getting around & local context
- Walk 12Car-Dependent
- Bike 19Somewhat Bikeable
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Area profileU.S. Census ACS 5-year estimates (ACS 2019–2023 5-year estimates)
Median income
$166,838
Median home value
$618,900
Median rent
$1,622/mo
College educated
58.8%
Homeownership
97.4%
Poverty rate
1.8%
ACS 2019–2023 5-year estimates for the ZCTA associated with school ZIP 10994; this is area context, not an attendance boundary.
Programs & students
Programs & Offerings
Compare nearby
Nearby same-level schools
4 from a 5-mile search; district fallback available
| School | Score | Grades | Distance | Enrollment | Compare |
|---|---|---|---|---|---|
| Rockland BocesEnrollment path unverified | 5.7 | K–12 | 1.2 mi | 1,143 | Compare → |
| Birchwood SchoolEnrollment path unverified | 6.7 | K–12 | 1.5 mi | 77 | Compare → |
| Nanuet Senior High SchoolEnrollment path unverified | 8.4 | 9–12 | 1.6 mi | 761 | Compare → |
| Daytop Prep SchoolPrivate · tuition | Not rated | 9–11 | 2.2 mi | 8 | Compare → |
Distance is proximity only; it is not attendance eligibility.
Enrollment path unverified: Potential public school; its attendance or application path has not been classified.
Private · tuition: Potential private option; tuition and admission requirements have not been verified.
Clarkstown Central School District
- Schools in district
- 16
- Rank in district
- #2 of 15
- District spending per student
- $28,785NCES F-33 · FY 2023 · This annual source is three years behind the current year.
- District child poverty rate
- 4.8%Census SAIPE · 2024
Clarkstown South Senior High School is listed in CLARKSTOWN CENTRAL SCHOOL DISTRICT; a district label does not verify attendance for an address.
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, serving approximately 1,386 students in grades 9th-12th with a 12.5:1 student-teacher ratio. It holds a MySchoolScout rating of 9.0 out of 10 and ranks #107 of 4,742 schools in NY. State assessment records show 98% math proficiency (multi-year average, 2009-2021) and 96% reading/ELA proficiency (multi-year average, 2009-2021).
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.
School factsNCES Common Core of Data (CCD) (SY 2023–24)
- Grades
- 9th – 12th
- Enrollment
- 1,386
- Student-Teacher Ratio
- 12.5:1
- Teachers (FTE)
- 111
- Type
- regular
- Setting
- Large Suburb
- County
- Rockland County
- Chronic Absenteeism (SY 2022-23)
- 17.5%
- Phone
- (845) 624-3400
- 4-Year Graduation
- 98.0%
- Area population (ZIP 10994)
- 5,925
- Area average commute
- 28.6 min
- Area median age
- 51
About this school's data
Every number on this page comes from a published source with a stated period. Where a source is partial, aging, or describes a surrounding area rather than the school, that limitation is named below.
- School directory (enrollment, grades, staff, contact)
- NCES Common Core of Data (CCD) · SY 2023–24 · Medium confidence
- Source period: SY 2023–24. A newer release may be available.
- MySchoolScout rating and rank
- MySchoolScout ranking model · Low confidence
- Vintage not available. Do not use this measure alone.
- Derived as a weighted blend of the component scores shown in Academics from state assessment, EdFacts growth, and NCES resource records.
- Math proficiency
- State department of education · 2021 EdFacts · Low confidence
- Older source: 2021 EdFacts. Use as historical context.
- Available for part of the eligible units; results may not represent the full area.
- Derived from source records rather than read directly from one field.
- Reading/ELA proficiency
- State department of education · 2021 EdFacts · Low confidence
- Older source: 2021 EdFacts. Use as historical context.
- Available for part of the eligible units; results may not represent the full area.
- Derived from source records rather than read directly from one field.
- Student progress (growth)
- NCES EdFacts · Mixed source periods · Low confidence
- Vintage not available. Do not use this measure alone.
- Available for part of the eligible units; results may not represent the full area.
- Derived as the fitted year-over-year slope of proficiency from multi-year assessment records.
- Neighborhood (income, housing, education)
- U.S. Census ACS 5-year estimates · ACS 2019–2023 5-year estimates · Low confidence
- Older source: ACS 2019–2023 5-year estimates. Use as historical context.
- Reported for the ZCTA for ZIP 10994; this does not measure the attendance area.
- Programs (AP/IB, athletics, gifted)
- CRDC via Urban Institute · SY 2021–22 · Medium confidence
- Available for part of the eligible units; results may not represent the full area.
- Source period: SY 2021–22. A newer release may be available.
Evidence periods: Rating mixed/unknown input periods; assessments multi-year average, 2009-2021; directory SY 2023–24
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