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SCHOOL COMMUNITY·HOPEWELL VALLEY REGIONAL SCHOOL DISTRICT·NCES 340753000503

Stony Brook Elementary School

20 STEPHENSON ROAD, PENNINGTON, NJ 08534 · (609) 737-4006 · Mercer County
GRADES PK–05ELEMENTARY21-SUBURBREGULAR SCHOOL395 STUDENTS
A+
allk12 Grade
Scored higher than 97% of New Jersey public elementary schools
  • A+Test scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
  • A+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 Jersey public elementary schools

Enrollment
395
Elementary
DISTRICT 388 · STATE 405
Student : Teacher
9.6:1
41 FTE teachers
DISTRICT 8.9:1 · STATE 11.4:1
Free / Reduced Lunch
13%
50 students
DISTRICT 6% · STATE 41%
Community
1
0 members
Enrollment and student:teacher ratio compared against other elementary schools. Free/Reduced Lunch and demographics compared against all schools.

Enrollment by grade, 2024-25

GradeStudentsShare
Pre-K103%
Kindergarten6015%
Grade 15614%
Grade 28722%
Grade 36015%
Grade 46416%
Grade 55815%

This year's kindergarten class (60) is about the same size as its 5th grade class (58).

Student demographics
67%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 50% · STATE 71% · US 70%
White
14938%
DISTRICT 68% · STATE 37% · US 43%
Hispanic
4010%
DISTRICT 8% · STATE 35% · US 30%
Black
338%
DISTRICT 4% · STATE 14% · US 15%
Asian
16542%
DISTRICT 17% · STATE 10% · US 6%
Two+
82%
DISTRICT 3% · STATE 3% · US 5%
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
19950%
Female
19650%

School pathway

Students here typically continue to
Stony Brook Elementary School→Timberlane Middle School→Hopewell Valley Central High School
Based on grade levels within Hopewell Valley Regional School District. Attendance zones can vary; confirm enrollment with the district.

Discussions

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Test scores

NJSLA 2024-25 . % Meeting or Exceeding Expectations
English Language Arts
81.0%
NJ avg 53.1% . -4.8pp since 2023
Math
78.9%
NJ avg 41.6% . -0.6pp 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 79 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 5 points since 2023, while math scores have held steady.

NJSLA results by year

School yearEnglish Language ArtsMath
2024-2581.0%78.9%
2023-2485.8%79.5%
% 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
OUTPERFORMING
Top 10% of NJ schools after controlling for student poverty
Actual proficiency
79.3%
composite math + reading, all grades
Predicted
59.2%
based on NJ schools with similar FRL share
Beats by
+20.0pp
above demographic expectation

What this means: About 79% of students here test proficient in math and reading, well above the roughly 59% typical for New Jersey schools with a similar share of low-income students. BeatsExpectations ranks schools against others at the same poverty level, not by raw scores, so a school can post high scores and still fall short of its prediction, or post lower scores and still beat it. This school clears its prediction by about 20 points, placing it in New Jersey's top 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 Stony Brook Elementary School

Stony Brook Elementary School's state test result (79.3% proficient) is higher than 5 of the 5 schools below with a result.

SchoolStudentsLow-incomeProficient
Stony Brook Elementary School this school39512.7%79.3%
Littleton Elementary School
Morris Plains
39211.0%73.7%
Littlebrook School
PRINCETON
37410.7%76.7%
Amsterdam Elementary School
Hillsborough
37610.6%65.6%
Triangle Elementary School
Hillsborough
36217.7%73.3%
Frost Elementary School
EAST BRUNSWICK
38314.6%72.9%
Matched among New Jersey elementary 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 Stony Brook Elementary School ranks

Among elementary schools
MeasureThis schoolIn New JerseyIn Mercer County
State test proficiency
ranked highest first
79.3%#42 of 1,290#3 of 56
Math proficiency
ranked highest first
78.9%#101 of 1,319
▼ 33
#4 of 56
no change
Reading proficiency
ranked highest first
81.0%#80 of 1,319
▼ 49
#3 of 56
▼ 1
Enrollment
ranked largest first
395#718 of 1,562#22 of 60
Students per teacher
ranked fewest first
9.6:1#245 of 1,390#9 of 57
Diversity index
ranked most diverse first
66.6%#268 of 1,392#16 of 57
Free and reduced lunch
ranked highest share first
12.7%#1,187 of 1,481#48 of 58
Enrollment change since 2017-18
ranked fastest growth first
+0.5%#534 of 545#22 of 22
Ranked against other public elementary 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
395
+17 (+4%) vs 2020
-12% since 2010-11, when it was 448
Student : Teacher
9.6:1
was 10.2:1
Source: NCES Common Core of Data

Enrollment and staffing by year

School yearStudentsTeachers (FTE)Students per teacherFree and reduced lunch
2024-2539541.39.6:113% (50)
2023-2440838.810.5:14% (18)
2022-2340039.810.1:14% (15)
2020-213783710.2:12% (9)
2017-1839339.79.9:14% (15)
2015-164384110.7:16% (27)
2010-114482915.4:13% (14)
Source: NCES Common Core of Data. Rows are the federal collections on file for Stony Brook Elementary School.

Since 2017-18: students up 1% (393 to 395); teachers up 4% (39.7 to 41.3).

About Stony Brook Elementary School

Stony Brook Elementary School is classified as an elementary school. It is located in PENNINGTON, New Jersey. The school's 395 students are in pre-K through 5.

Within Hopewell Valley Regional School District, Stony Brook Elementary School is one of 6 schools. The district enrolls 3,423 students.

Asian students are the largest group at Stony Brook Elementary School, with 42% of enrollment. The remaining shares are 38% White, 10% Hispanic, 8% Black, and 2% multiracial. Mercer County as a whole is about 12% Asian, so the school's share is higher. The chance that two students picked at random at Stony Brook Elementary School belong to different racial or ethnic groups, known as the diversity index, is 67%.

Dividing enrollment by its 41.3 full-time-equivalent teachers gives a ratio of about 9.6:1. Among elementary schools in New Jersey, the typical ratio is 11.4:1. Eligible students account for 13% of enrollment in the free or reduced-price lunch program. Public schools in Mercer County average 48%.

The allk12 Grade for Stony Brook Elementary School is A+. Compared with New Jersey public elementary schools, the school scored higher than 97% on a mix of test scores, poverty-adjusted results, and recent trend.

Stony Brook Elementary School posts an average proficiency rate on state tests of 79.3%. Schools with its free or reduced-price lunch share in New Jersey are predicted to post 59.2%, so the school is 20.0 points ahead and in the state's top 10%.

Census estimates describe Mercer County this way: median household income is about $100,645, about 45% of adults have at least a bachelor's degree, and roughly 7% of residents are in poverty. Federal data list 110 public schools in Mercer County, with a combined enrollment of about 58,647.

Mercer County Technical School STEM Academy is the nearest neighboring public school, about 1.4 miles away. A five-mile radius around the school includes at least 8 other public schools. Nearby schools average 48.1% on proficiency, and Stony Brook Elementary School is above that at 79.3%.

Locale: Suburb: Large. In NCES terms, the school is in a suburban area outside a principal city, within an urbanized area with a population of 250,000 or more.

A comparison of 2020-21 and 2024-25 shows enrollment up 4%, from 378 to 395.

Discussion on this page can cover sports tryouts, band and choir, and theater. Posting is open to anyone connected to the school.

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
Stony Brook Elementary School
District
Hopewell Valley Regional School District
Address
20 STEPHENSON ROAD, PENNINGTON, NJ 08534
Phone
(609) 737-4006
County
Mercer County
Level
Elementary
Grade range
PK–05
Total enrollment
395
Teachers (FTE)
41
Student–teacher ratio
9.6:1
Free and reduced lunch
50 (13%)
Locale
21-Suburb: Large
NCES ID
340753000503
Charter school
No
Virtual school
No

Related schools

Other schools in Hopewell Valley Regional School District
Other schools in PENNINGTON
Other Stony Brook Elementary schools

3 other US public schools in 3 states are named Stony Brook Elementary. Stony Brook Elementary School is the 2nd largest of the 4.

Nearby schools

Frequently asked questions

About Stony Brook Elementary School
How many students attend Stony Brook Elementary School?
Stony Brook Elementary School enrolls approximately 395 students in grades PK-05.
What grades does Stony Brook Elementary School serve?
Stony Brook Elementary School serves grades PK-05.
How many students per teacher at Stony Brook Elementary School?
Approximately 9.6:1 students per teacher at Stony Brook Elementary School.
What is the racial breakdown of students at Stony Brook Elementary School?
At Stony Brook Elementary School, the student body is approximately 38% White, 10% Hispanic, 8% Black, 42% Asian, 2% Two or more.
Who oversees Stony Brook Elementary School?
Stony Brook Elementary School is overseen by Hopewell Valley Regional School District in Mercer County.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.
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