The bulletin board for America's public schools. Parents, teachers, students, and staff. One community per school.
SCHOOL COMMUNITY·WEST WINDSOR-PLAINSBORO REGIONAL SCHOOL DISTRICT·NCES 341770003258

West Windsor-Plainsboro High School South

346 CLARKSVILLE ROAD, West Windsor, NJ 08550 · (609) 716-5050 · Mercer County
GRADES 09–12HIGH21-SUBURBREGULAR SCHOOL1,627 STUDENTS
A
allk12 Grade
Scored higher than 92% of New Jersey public high schools
  • ATest scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
  • ABeats 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 Jersey public high schools

Enrollment
1,627
High
DISTRICT 1,569 · STATE 929
Student : Teacher
13.7:1
119 FTE teachers
DISTRICT 13.3:1 · STATE 12.7:1
Free / Reduced Lunch
9%
151 students
DISTRICT 10% · STATE 41%
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

GradeStudentsShare
Grade 939925%
Grade 1042626%
Grade 1140525%
Grade 1239724%
Student demographics
43%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 45% · STATE 71% · US 70%
White
21413%
DISTRICT 12% · STATE 37% · US 43%
Hispanic
936%
DISTRICT 6% · STATE 35% · US 30%
Black
825%
DISTRICT 5% · STATE 14% · US 15%
Asian
1,20174%
DISTRICT 72% · STATE 10% · US 6%
Two+
352%
DISTRICT 4% · STATE 3% · US 5%
Native American
10%
DISTRICT 0% · STATE 0% · US 1%
Pacific Islander
10%
DISTRICT 0% · STATE 0% · US 0%
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
Male
79749%
Female
83051%

Discussions

+ POST

Test scores

NJSLA 2024-25 . % Meeting or Exceeding Expectations
English Language Arts
81.4%
NJ avg 53.1% . -9.6pp since 2023
Math
65.1%
NJ avg 41.6% . +3.3pp since 2023

What this means: On the NJSLA, New Jersey's statewide test, about 81 of every 100 students at this school read and write at grade level and about 65 of 100 do math at grade level. Across all New Jersey schools, those numbers are about 53 and 42. Reading and writing scores are down about 10 points since 2023, while math scores are up about 3 points.

NJSLA results by year

School yearEnglish Language ArtsMath
2024-2581.4%65.1%
2023-2491.0%61.8%
% Meeting or Exceeding Expectations, all students and all tested grades.
Source: NJSLA. All students, all grades. See all years and grades →

BeatsExpectations

Demographically-adjusted score · methodology
Tier
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
73.6%
composite math + reading, all grades
Predicted
61.1%
based on NJ schools with similar FRL share
Beats by
+12.5pp
above demographic expectation

What this means: About 74% of students here test proficient in math and reading, compared with the roughly 61% typical for New Jersey 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 Jersey'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 West Windsor-Plainsboro High School South

West Windsor-Plainsboro High School South's state test result (73.6% proficient) is higher than 2 of the 5 schools below with a result.

SchoolStudentsLow-incomeProficient
West Windsor-Plainsboro High School South this school1,6279.3%73.6%
West Windsor-Plainsboro High School North
PLAINSBORO
1,5106.3%72.5%
South Brunswick High School
MONMOUTH JUNCTION
2,66616.5%58.9%
John P. Stevens High School
EDISON
2,68716.0%73.7%
Montgomery High School
Skillman
1,6117.8%75.9%
Bergen County Academies
Hackensack
1,1309.7%98.0%
Matched among New Jersey 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 West Windsor-Plainsboro High School South ranks

Among high schools
MeasureThis schoolIn New JerseyIn Mercer County
State test proficiency
ranked highest first
73.6%#27 of 397#1 of 17
Math proficiency
ranked highest first
65.1%#43 of 400
▲ 14
#1 of 18
▲ 1
Reading proficiency
ranked highest first
81.4%#37 of 395
▼ 5
#2 of 16
▲ 1
Enrollment
ranked largest first
1,627#69 of 442#2 of 23
Students per teacher
ranked fewest first
13.7:1#299 of 388#10 of 16
Diversity index
ranked most diverse first
43.1%#286 of 389#14 of 16
Free and reduced lunch
ranked highest share first
9.3%#342 of 405#17 of 19
Enrollment change since 2017-18
ranked fastest growth first
+1.6%#157 of 173#8 of 8
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 2024-25
Enrollment
1,627
-22 (-1%) vs 2020
+15% since 1990-91, when it was 1,415
Student : Teacher
13.7:1
was 13.6:1
Source: NCES Common Core of Data

Enrollment and staffing by year

School yearStudentsTeachers (FTE)Students per teacherFree and reduced lunch
2024-251,627118.513.7:19% (151)
2023-241,626121.913.3:16% (98)
2022-231,630123.813.2:16% (92)
2020-211,64912113.6:15% (84)
2017-181,60111314.2:15% (81)
2015-161,59110914.6:15% (84)
2010-111,60610515.3:14% (68)
2000-011,67110016.7:13% (48)
1990-911,4159914.3:1N/A
Source: NCES Common Core of Data. Rows are the federal collections on file for West Windsor-Plainsboro High School South.

Since 2017-18: students up 2% (1,601 to 1,627); teachers up 5% (113 to 118.5).

About West Windsor-Plainsboro High School South

West Windsor-Plainsboro High School South is a large high school for students in West Windsor, New Jersey. In all, 1,627 students attend the school in grades 9 through 12. It has 75% more students than the average for high schools in New Jersey (about 929).

West Windsor-Plainsboro High School South is part of West Windsor-Plainsboro Regional School District, where 10 schools serve 8,831 students.

The share of Asian students at West Windsor-Plainsboro High School South is 74%, a majority. Smaller groups are 13% White, 6% Hispanic, 5% Black, and 2% multiracial. For comparison, the population of Mercer County is roughly 12% Asian. Its diversity index, the chance that two randomly chosen students belong to different racial or ethnic groups, is 43%.

There are about 13.7 students for every full-time-equivalent teacher at West Windsor-Plainsboro High School South, which has 118.5. The school's 13.7:1 compares with an average of 12.7:1 for high schools in New Jersey. Eligibility for free or reduced-price lunch stands at 9%. That rate is below the 48% average among public schools in Mercer County.

On the allk12 Grade, West Windsor-Plainsboro High School South lands at A, ahead of 92% of New Jersey public high schools.

Given its share of students eligible for free or reduced-price lunch, West Windsor-Plainsboro High School South would be expected to post about 61.1%. Its actual average proficiency rate across its state test results is 73.6%.

In Mercer County, where the school is located, the median household earns about $100,645 a year, roughly 45% of adults have a four-year degree or more, and the share of residents below the poverty line is 7%. Public schools in Mercer County number 110, with about 58,647 students.

Maurice Hawk Elementary School is the nearest public school to West Windsor-Plainsboro High School South, about 0.4 miles away. Within five miles of West Windsor-Plainsboro High School South, there are at least 8 other public schools. On proficiency, West Windsor-Plainsboro High School South is ahead of the 68.8% nearby average, ranking 2nd of 9.

The school's locale code, Suburb: Large, means it is in a suburban area outside a principal city, within an urbanized area with a population of 250,000 or more.

Between 2020-21 and 2024-25, enrollment moved from 1,649 to 1,627, a small change.

Anyone can start a thread about fundraisers, report cards, and school supplies at West Windsor-Plainsboro High School South. Parents, students, alumni, and staff are welcome to post.

Mercer County at a glance

View full county profile
Population
385,864
Census ACS
Median income
$100,645
Household, ACS
Bachelor's+
45%
Adults 25+
Poverty rate
7%
Below federal line
Schools in county
110
58,647 students

Quick facts

School name
West Windsor-Plainsboro High School South
District
West Windsor-Plainsboro Regional School District
Address
346 CLARKSVILLE ROAD, West Windsor, NJ 08550
Phone
(609) 716-5050
County
Mercer County
Level
High
Grade range
09–12
Total enrollment
1,627
Teachers (FTE)
119
Student–teacher ratio
13.7:1
Free and reduced lunch
151 (9%)
Locale
21-Suburb: Large
NCES ID
341770003258
Charter school
No
Virtual school
No

Related schools

Other schools in West Windsor-Plainsboro Regional School District
Other schools in West Windsor
Nearby schools

Frequently asked questions

About West Windsor-Plainsboro High School South
How many students attend West Windsor-Plainsboro High School South?
West Windsor-Plainsboro High School South enrolls approximately 1,627 students in grades 09-12.
What age range does West Windsor-Plainsboro High School South serve?
West Windsor-Plainsboro High School South serves students from grade 09 through grade 12.
How many students per teacher at West Windsor-Plainsboro High School South?
Approximately 13.7:1 students per teacher at West Windsor-Plainsboro High School South.
How diverse is West Windsor-Plainsboro High School South?
West Windsor-Plainsboro High School South reports a student body of 13% White, 6% Hispanic, 5% Black, 74% Asian, 2% Two or more.
What district is West Windsor-Plainsboro High School South in?
West Windsor-Plainsboro High School South is part of West Windsor-Plainsboro Regional School District.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.
+ Post