A+
Clarkstown South Senior High School
PublicHighGrades 9–12
31 Demarest Mill Rd, West Nyack, NY 10994 · (845) 624-3400 · Part of Clarkstown Central School District
Students
1,386
Students per teacher
12:1
Free or reduced lunch
23%
Setting
Suburb
Grades
9–12
What stands out about Clarkstown South Senior High School
- School Grade A+: near the top of New York’s public schools
- Math proficiency 43 pts above the state
- Reading / language arts 27 pts above the state
- Small classes: 12:1 students per teacher
On the path
Where Congers kids come from and go next.
6–83 middle schoolsDepends on your address
9–12Clarkstown South Senior High SchoolYou are here
Test scores
EDFacts via Urban Institute Education Data Portal (SY2020-21) · 2020–21Math proficiency99.5%
State average 56.1%
Reading / language arts90%
State average 62.6%
Location
Directions ↗
31 Demarest Mill Rd, West Nyack
Students
Enrollment by grade
Grade 9320
Grade 10339
Grade 11381
Grade 12304
Ungraded42
Enrollment over time
1,336’20
1,318’21
1,345’22
1,386’23
1,386’24
Up 3.7% since 2020.
Who goes here
White 49%Hispanic 26%Asian 15%Black 6%Two or more races 2%American Indian/Alaska Native <1%Native Hawaiian/Pacific Islander <1%
As reported to NCES, share of students with a reported race or ethnicity.
What neighbors say
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Parents talk
Conversations in Town Square that mention Clarkstown South Senior High School.
Other schools in Clarkstown Central School District
School facts: U.S. Department of Education (NCES), 2024-2025 school year. Scores: EDFacts via Urban Institute Education Data Portal (SY2020-21). The School Grade is our own summary of state test results. Neighbor ratings are opinions, not an official measure of school quality.