Clarkstown High School South is a public high school located in West Nyack, New York, United States. The school educates students in grades 9 through 12, and is one of two high schools in the Clarkstown Central School District. It is commonly referred to as Clarkstown South, or simply "South."
Serving 1,386 students in grades 9-12, Clarkstown South Senior High School ranks in the top 1% of all schools in New York for overall test scores (math proficiency is top 1%, and reading proficiency is top 1%).
The percentage of students achieving proficiency in math is ≥95% (which is higher than the New York state average of 52%). The percentage of students achieving proficiency in reading/language arts is ≥90% (which is higher than the New York state average of 49%).
The student-teacher ratio of 12:1 is higher than the New York state level of 11:1.
Minority enrollment is 50% of the student body (majority Hispanic), which is lower than the New York state average of 60% (majority Hispanic).
Quick Facts (2025-26)
- Grades: 9-12
- Enrollment: 1,386 students
- Student-Teacher Ratio: 12:1
- Minority Enrollment: 50%
- Graduation Rate: 97% (Top 5% in NY)
- Overall Testing Rank: Top 1%
- Math Proficiency: ≥95% (Top 1%)
- Reading Proficiency: ≥90% (Top 5%)
- Science Proficiency: 96% (Top 5%)
- Source: National Center for Education Statistics (NCES), NY Dept. of Education
Top Rankings
Clarkstown South Senior High School ranks among the top 20% of public schools in New York for:
Category
Attribute
Overall Rank
Math Proficiency
Reading/Language Arts Proficiency
Science Proficiency
Graduation Rate
Diversity
School Overview
Clarkstown South Senior High School's student population of 1,386 students has stayed relatively flat over five school years.
The teacher population of 112 teachers has grown by 8% over five school years.
Grades Offered
Grades 9-12
(Supplemental Virtual)
(Supplemental Virtual)
Total Students
1,386 students
Gender %
Total Classroom Teachers
112 teachers
Year Founded
1971
Colors
Brown, Gold
School Calendar
School Motto
Preparing today’s students to conquer tomorrow’s challenges.
School Rankings
Clarkstown South Senior High School ranks within the top 1% of all 4,346 schools in New York (based off of combined math and reading proficiency testing data).
The diversity score of Clarkstown South Senior High School is 0.66, which is less than the diversity score at state average of 0.72. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#36 out of 4346 schools
(Top 1%)
(Top 1%)
Math Test Scores (% Proficient)
≥95%
52%
Reading/Language Arts Test Scores (% Proficient)
≥90%
49%
Science Test Scores (% Proficient)
96%
78%
Student-Teacher Ratio
12:1
11:1
American Indian
n/a
1%
Asian
15%
10%
Hispanic
26%
30%
Black
6%
16%
White
50%
40%
Hawaiian
n/a
n/a
Two or more races
3%
3%
All Ethnic Groups
Graduation Rate
97%
87%
Participates in the National School Lunch Program (NSLP)
Yes
Eligible for Free Lunch
20%
54%
Eligible for Reduced Lunch
2%
3%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), NY Dept. of Education
School Notes
- School Mascot: Viking
Profile last updated: 02/09/2025
Frequently Asked Questions
What is Clarkstown South Senior High School's ranking?
Clarkstown South Senior High School is ranked #36 out of 4,346 schools, which ranks it among the top 1% of public schools in New York.
What schools are Clarkstown South Senior High School often compared to?
Clarkstown South Senior High Schoolis often viewed alongside schools like Clarkstown North Senior High School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
≥95% of students have achieved math proficiency (compared to the 52% NY state average), while ≥90% of students have achieved reading proficiency (compared to the 49% NY state average).
What is the graduation rate of Clarkstown South Senior High School?
The graduation rate of Clarkstown South Senior High School is 97%, which is higher than the New York state average of 87%.
How many students attend Clarkstown South Senior High School?
1,386 students attend Clarkstown South Senior High School.
What is the racial composition of the student body?
50% of Clarkstown South Senior High School students are White, 26% of students are Hispanic, 15% of students are Asian, 6% of students are Black, and 3% of students are Two or more races.
What is the student-teacher ratio of Clarkstown South Senior High School?
Clarkstown South Senior High School has a student ration of 12:1, which is higher than the New York state average of 11:1.
What grades does Clarkstown South Senior High School offer ?
Clarkstown South Senior High School offers enrollment in grades 9-12 (Supplemental Virtual).
What school district is Clarkstown South Senior High School part of?
Clarkstown South Senior High School is part of Clarkstown Central School District.
School Reviews
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