1
Parents: what's one thing you'd want the CLARKSTOWN SOUTH SENIOR HIGH SCHOOL administration to hear?
Community prompt from u/allk12. Replies below.
Enrollment
1,386
High
DISTRICT 867 · STATE 668
SCHOOL COMMUNITY·CLARKSTOWN CENTRAL SCHOOL DISTRICT·NCES 362034001865
CLARKSTOWN SOUTH SENIOR HIGH SCHOOL
31 DEMAREST MILL RD, WEST NYACK, NY 10994 · (845) 624-3400 · Rockland County
GRADES 09–12HIGH21-SUBURBREGULAR SCHOOL1,386 STUDENTS
A-
allk12 Grade
Scored higher than 82% of New York public high schools
- ATest scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
- B+Beats expectations How far test scores land above or below what the share of low-income students predicts for a school in this state.
- ·Three-year trend Not available for this school, so the grade uses the other parts.
Grades compare a school only with schools in the same state, because every state gives its own test. How grades work · Top-graded New York public high schools
Student : Teacher
12.1:1
114 FTE teachers
DISTRICT 8.6:1 · STATE 11.0:1
Free / Reduced Lunch
23%
316 students
DISTRICT 23% · STATE 58%
Community
1
0 members
Enrollment and student:teacher ratio compared against other high schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade, 2024-25
| Grade | Students | Share |
|---|---|---|
| Grade 9 | 320 | 23% |
| Grade 10 | 339 | 24% |
| Grade 11 | 381 | 27% |
| Grade 12 | 304 | 22% |
| Ungraded | 42 | 3% |
Student demographics
66%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 67% · STATE 72% · US 70%
Student head counts by race/ethnicity from federal NCES enrollment data. District, state, and US figures are each group's share of all public school students in that area (US excludes territories). Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
Test scores
NYS Assessments 2024-25 . % Proficient (Level 3 + Level 4)English Language Arts
93.0%
NY avg 58.3% . -3.0pp since 2023
Math
84.0%
NY avg 57.4% . -11.0pp since 2023
What this means: On the NYS Assessments, New York's statewide test, about 93 of every 100 students at this school read and write at grade level and about 84 of 100 do math at grade level. Across all New York schools, those numbers are about 58 and 57. Reading and writing scores are down about 3 points since 2023, while math scores are down about 11 points.
NYS Assessments results by year
| School year | English Language Arts | Math |
|---|---|---|
| 2024-25 | 93.0% | 84.0% |
| 2023-24 | 96.0% | 95.0% |
% Proficient (Level 3 + Level 4), all students and all tested grades.
Source: NYS Assessments. All students, all grades. See all years and grades →
BeatsExpectations
Demographically-adjusted score · methodologyTier
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
80.8%
composite math + reading, all grades
Predicted
66.6%
based on NY schools with similar FRL share
Beats by
+14.2pp
above demographic expectation
What this means: About 81% of students here test proficient in math and reading, compared with the roughly 67% typical for New York schools with a similar share of low-income students. BeatsExpectations measures results against demographically similar schools rather than by raw scores, and this school falls within the typical range, neither among New York's top nor bottom 10%.
BeatsExpectations runs a per-state regression of proficiency on free/reduced-lunch share, then scores each school by residual. How this is calculated →
Schools most like CLARKSTOWN SOUTH SENIOR HIGH SCHOOL
CLARKSTOWN SOUTH SENIOR HIGH SCHOOL's state test result (80.8% proficient) is higher than 4 of the 5 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| CLARKSTOWN SOUTH SENIOR HIGH SCHOOL this school | 1,386 | 22.8% | 80.8% |
| H FRANK CAREY HIGH SCHOOL FRANKLIN SQUARE | 1,644 | 20.5% | 64.7% |
| CLARKSTOWN NORTH SENIOR HIGH SCHOOL NEW CITY | 1,209 | 27.0% | 78.2% |
| FLORAL PARK MEMORIAL HIGH SCHOOL FLORAL PARK | 1,308 | 23.1% | 67.5% |
| GEN DOUGLAS MACARTHUR SENIOR HIGH SCHOOL LEVITTOWN | 1,295 | 23.1% | 90.3% |
| HARRISON HIGH SCHOOL HARRISON | 1,066 | 25.0% | 80.7% |
Matched among New York high schools on enrollment, the share of students from low-income families (eligible for free or reduced-price lunch), and racial and ethnic makeup. Proficient is the average share of students meeting the state standard across all of the school's state tests in 2023-24 and 2024-25, the same combined score our test-score rankings use. Online schools and schools serving specialized populations are not matched.
Where CLARKSTOWN SOUTH SENIOR HIGH SCHOOL ranks
Among high schools| Measure | This school | In New York | In Rockland County |
|---|---|---|---|
| State test proficiency ranked highest first | 80.8% | #172 of 1,135 | #3 of 10 |
| Math proficiency ranked highest first | 84.0% | #103 of 1,109 ▼ 52 | #1 of 10 no change |
| Reading proficiency ranked highest first | 93.0% | #121 of 1,135 ▼ 30 | #2 of 10 ▼ 1 |
| Enrollment ranked largest first | 1,386 | #116 of 1,216 | #5 of 12 |
| Students per teacher ranked fewest first | 12.1:1 | #715 of 1,058 | #7 of 10 |
| Diversity index ranked most diverse first | 65.9% | #158 of 1,070 | #4 of 10 |
| Free and reduced lunch ranked highest share first | 22.8% | #1,074 of 1,167 | #9 of 10 |
| Enrollment change since 2017-18 ranked fastest growth first | +1.0% | #320 of 339 | N/A |
Ranked against other public high schools. Online schools are left out of every list, and test-score lists leave out schools that serve specialized populations. Each rank links to the full list. Arrows under a test-score rank show places moved since the prior test year, among schools tested both years.
4-year change
SY 2020-21 vs SY 2024-25Enrollment
1,386
+50 (+4%) vs 2020
-5% since 1990-91, when it was 1,455
Student : Teacher
12.1:1
was 12.3:1
Source: NCES Common Core of Data
Enrollment and staffing by year
| School year | Students | Teachers (FTE) | Students per teacher | Free and reduced lunch |
|---|---|---|---|---|
| 2024-25 | 1,386 | 114.3 | 12.1:1 | 23% (316) |
| 2023-24 | 1,386 | 112 | 12.4:1 | 22% (298) |
| 2022-23 | 1,345 | 110.5 | 12.2:1 | 16% (214) |
| 2020-21 | 1,336 | 109 | 12.3:1 | 16% (219) |
| 2017-18 | 1,372 | 102.3 | 13.4:1 | 11% (155) |
| 2015-16 | 1,415 | 95 | 14.9:1 | 8% (118) |
| 2010-11 | 1,547 | 104 | 14.9:1 | 4% (58) |
| 2000-01 | 1,434 | 109 | 13.2:1 | 4% (57) |
| 1990-91 | 1,455 | 132 | 11.0:1 | N/A |
Source: NCES Common Core of Data. Rows are the federal collections on file for CLARKSTOWN SOUTH SENIOR HIGH SCHOOL.
About CLARKSTOWN SOUTH SENIOR HIGH SCHOOL
CLARKSTOWN SOUTH SENIOR HIGH SCHOOL is listed by the National Center for Education Statistics as a high school in WEST NYACK, New York. Students in grades 9 through 12 make up the school's enrollment of 1,386 students. That compares with an average of about 668 students for high schools in New York.
Across its 16 schools, CLARKSTOWN CENTRAL SCHOOL DISTRICT enrolls 7,821 students. CLARKSTOWN SOUTH SENIOR HIGH SCHOOL is one of those schools.
No group is above 50% at CLARKSTOWN SOUTH SENIOR HIGH SCHOOL; the largest is White, at 49%. It is also 26% Hispanic, 15% Asian, 6% Black, and 2% multiracial. Rockland County's residents are about 62% White, 13 points above the school's share. Measured by the diversity index, the student body scores 66%.
For every teacher at CLARKSTOWN SOUTH SENIOR HIGH SCHOOL, there are about 12.1 students; the school has 114.3 full-time-equivalent teachers. Statewide, high schools in New York average 11.0:1. The eligibility rate for free or reduced-price meals is 23%. On average, public schools in Rockland County report 48%.
Among New York public high schools, CLARKSTOWN SOUTH SENIOR HIGH SCHOOL outscored 82%, which works out to an A- on the allk12 Grade.
The model predicts 66.6% for a school in New York with CLARKSTOWN SOUTH SENIOR HIGH SCHOOL's free or reduced-price lunch share. CLARKSTOWN SOUTH SENIOR HIGH SCHOOL posts 80.8%.
The county, Rockland County, is where the school is located. Median household income comes to about $109,959, a bachelor's degree or higher is held by about 43% of adults, and the poverty rate is about 11%. The county has 66 public schools and about 41,335 students.
Among nearby public schools, WEST NYACK ELEMENTARY SCHOOL is closest at about 0.9 miles. Other public schools within five miles number at least 8. The nearest schools with test data average 62.6%, lower than CLARKSTOWN SOUTH SENIOR HIGH SCHOOL's 80.8%.
Locale data from NCES put CLARKSTOWN SOUTH SENIOR HIGH SCHOOL in a suburban area outside a principal city, within an urbanized area with a population of 250,000 or more (Suburb: Large).
The school's enrollment increased 4% from 2020-21 to 2024-25.
Anyone can start a thread about athletics, class schedules, and weather closures at CLARKSTOWN SOUTH SENIOR HIGH SCHOOL. Teachers and staff are welcome to share updates too.
Rockland County at a glance
View full county profilePopulation
341,883
Census ACS
Median income
$109,959
Household, ACS
Bachelor's+
43%
Adults 25+
Poverty rate
11%
Below federal line
Schools in county
66
41,335 students
Quick facts
Related schools
Other schools in CLARKSTOWN CENTRAL SCHOOL DISTRICT
- CLARKSTOWN NORTH SENIOR HIGH SCHOOLHigh · 1,209 students
- FELIX FESTA DETERMINATION MIDDLE SCHOOLMiddle · 679 students
- FELIX FESTA CHARACTER MIDDLE SCHOOLMiddle · 612 students
- FELIX FESTA ACHIEVEMENT MIDDLE SCHOOLMiddle · 609 students
- NEW CITY ELEMENTARY SCHOOLElementary · 446 students
- LAKEWOOD ELEMENTARY SCHOOLElementary · 441 students
Other schools in WEST NYACK
- ROCKLAND BOCESCombined · 1,115 students
- FELIX FESTA DETERMINATION MIDDLE SCHOOLMiddle · 679 students
- FELIX FESTA CHARACTER MIDDLE SCHOOLMiddle · 612 students
- FELIX FESTA ACHIEVEMENT MIDDLE SCHOOLMiddle · 609 students
- STRAWTOWN ELEMENTARY SCHOOLElementary · 314 students
- WEST NYACK ELEMENTARY SCHOOLElementary · 304 students
Nearby schools
- WEST NYACK ELEMENTARY SCHOOL0.9 mi · 304
- BARDONIA ELEMENTARY SCHOOL0.9 mi · 351
- ROCKLAND BOCES1.2 mi · 1,115
- FELIX FESTA CHARACTER MIDDLE SCHOOL1.4 mi · 612
- FELIX FESTA DETERMINATION MIDDLE SCHOOL1.4 mi · 679
- FELIX FESTA ACHIEVEMENT MIDDLE SCHOOL1.4 mi · 609
Frequently asked questions
About CLARKSTOWN SOUTH SENIOR HIGH SCHOOLWhat is the total enrollment at CLARKSTOWN SOUTH SENIOR HIGH SCHOOL?
CLARKSTOWN SOUTH SENIOR HIGH SCHOOL enrolls approximately 1,386 students in grades 09-12.
What age range does CLARKSTOWN SOUTH SENIOR HIGH SCHOOL serve?
CLARKSTOWN SOUTH SENIOR HIGH SCHOOL serves students from grade 09 through grade 12.
What is the student-teacher ratio at CLARKSTOWN SOUTH SENIOR HIGH SCHOOL?
The student-to-teacher ratio at CLARKSTOWN SOUTH SENIOR HIGH SCHOOL is approximately 12.1:1 (114 FTE teachers).
What is the student diversity at CLARKSTOWN SOUTH SENIOR HIGH SCHOOL?
Student demographics at CLARKSTOWN SOUTH SENIOR HIGH SCHOOL are roughly 49% White, 26% Hispanic, 6% Black, 15% Asian, 2% Two or more.
Is CLARKSTOWN SOUTH SENIOR HIGH SCHOOL public or private?
CLARKSTOWN SOUTH SENIOR HIGH SCHOOL is a public K-12 school, overseen by CLARKSTOWN CENTRAL SCHOOL DISTRICT.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.