Enrollment
310
Elementary
DISTRICT 464 · STATE 405
SCHOOL COMMUNITY·BRANCHBURG TOWNSHIP SCHOOL DISTRICT·NCES 340216005158
Stony Brook School
136 Cedar Grove Road, Branchburg, NJ 08876 · (908) 722-2400 · Somerset County
GRADES 04–05ELEMENTARY21-SUBURBREGULAR SCHOOL310 STUDENTS
B
allk12 Grade
Scored higher than 62% of New Jersey public elementary schools
- B+Test scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
- C+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
Student : Teacher
8.0:1
39 FTE teachers
DISTRICT 8.6:1 · STATE 11.4:1
Free / Reduced Lunch
10%
31 students
DISTRICT 12% · STATE 41%
Community
0
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
| Grade | Students | Share |
|---|---|---|
| Grade 4 | 160 | 52% |
| Grade 5 | 150 | 48% |
Student demographics
58%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 57% · STATE 71% · 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
School pathway
Students here typically continue to
Stony Brook School→Branchburg Central Middle School
Feeds from
Based on grade levels within Branchburg Township School District. Attendance zones can vary; confirm enrollment with the district.
Test scores
NJSLA 2024-25 . % Meeting or Exceeding ExpectationsEnglish Language Arts
64.8%
NJ avg 53.1% . -2.1pp since 2023
Math
69.4%
NJ avg 41.6% . +7.7pp since 2023
What this means: On the NJSLA, New Jersey's statewide test, about 65 of every 100 students at this school read and write at grade level and about 69 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 2 points since 2023, while math scores are up about 8 points.
NJSLA results by year
| School year | English Language Arts | Math |
|---|---|---|
| 2024-25 | 64.8% | 69.4% |
| 2023-24 | 66.9% | 61.7% |
% 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 · methodologyTier
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
59.7%
composite math + reading, all grades
Predicted
60.7%
based on NJ schools with similar FRL share
Beats by
-0.9pp
below demographic expectation
What this means: About 60% 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 Stony Brook School
Stony Brook School's state test result (59.7% proficient) is higher than 2 of the 5 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Stony Brook School this school | 310 | 10.0% | 59.7% |
| Washington Elementary School SUMMIT | 323 | 11.5% | 79.6% |
| Albert Payson Terhune Elementary WAYNE | 347 | 10.4% | 67.8% |
| Frances DeMasi Elementary School MARLTON | 332 | 10.5% | 52.3% |
| Bee Meadow School Whippany | 294 | 6.1% | 52.3% |
| Orchard Elementary School RIDGEWOOD | 348 | 5.2% | 82.4% |
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 School ranks
Among elementary schools| Measure | This school | In New Jersey | In Somerset County |
|---|---|---|---|
| State test proficiency ranked highest first | 59.7% | #339 of 1,290 | #26 of 42 |
| Math proficiency ranked highest first | 69.4% | #246 of 1,319 ▲ 98 | #21 of 42 no change |
| Reading proficiency ranked highest first | 64.8% | #388 of 1,319 ▼ 75 | #21 of 42 ▼ 4 |
| Enrollment ranked largest first | 310 | #1,063 of 1,562 | #39 of 46 |
| Students per teacher ranked fewest first | 8.0:1 | #38 of 1,390 | #5 of 45 |
| Diversity index ranked most diverse first | 57.7% | #588 of 1,392 | #33 of 45 |
| Free and reduced lunch ranked highest share first | 10.0% | #1,251 of 1,481 | #34 of 45 |
| Enrollment change since 2017-18 ranked steepest decline first | -9.4% | #450 of 798 | #18 of 31 |
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 2024-25Enrollment
310
+23 (+8%) vs 2020
-16% since 1990-91, when it was 371
Student : Teacher
8.0:1
was 9.0:1
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 | 310 | 39 | 8.0:1 | 10% (31) |
| 2023-24 | 304 | 40 | 7.6:1 | 8% (23) |
| 2022-23 | 286 | 41 | 7.0:1 | 4% (11) |
| 2020-21 | 287 | 32 | 9.0:1 | 7% (19) |
| 2017-18 | 342 | 34.2 | 10.0:1 | 7% (24) |
| 2015-16 | 327 | 37 | 8.8:1 | 6% (20) |
| 2010-11 | 265 | 16 | 16.6:1 | 4% (11) |
| 2000-01 | 394 | 34 | 11.6:1 | 2% (8) |
| 1990-91 | 371 | 29 | 12.8:1 | N/A |
Source: NCES Common Core of Data. Rows are the federal collections on file for Stony Brook School.
Since 2017-18: students down 9% (342 to 310); teachers up 14% (34.2 to 39).
About Stony Brook School
Stony Brook School is the name of a small elementary school in Branchburg, New Jersey. The school's enrollment of 310 students covers grades 4 through 5. Statewide, elementary schools in New Jersey average about 405 students each.
Stony Brook School belongs to Branchburg Township School District, a district of 3 schools and 1,385 students.
Roughly 61% of students at Stony Brook School are White. After that, the student body is 16% Asian, 13% Hispanic, 6% multiracial, and 4% Black. Among all residents of Somerset County, the White share is about 52%. The school's diversity index is 58%, meaning two students picked at random have a 58% chance of belonging to different racial or ethnic groups.
Stony Brook School operates with 39 full-time-equivalent teachers, a ratio of about 8.0:1. On average, elementary schools in New Jersey have 11.4:1, compared with 8.0:1 here. Stony Brook School reports 10% of students eligible for free or reduced-price meals. That rate is below the 28% average among public schools in Somerset County.
allk12 grades Stony Brook School a B. The grade compares the school only with New Jersey public elementary schools, because each state gives its own test.
On a poverty-adjusted basis, Stony Brook School falls in the middle 80% of New Jersey schools: 59.7% actual against 60.7% predicted.
Across Somerset County, the median household income is $140,374, about 58% of adults have at least a bachelor's degree, and roughly 4% of residents are in poverty. In all, Somerset County has 84 public schools and roughly 51,276 students.
The nearest other public school, Branchburg Central Middle School, is about 0.8 miles away. Inside a five-mile radius, there are at least 8 other public schools. Ranked by average proficiency, Stony Brook School places 6th out of 9 schools in its immediate area.
The school's federal locale classification is Suburb: Large.
Enrollment is up 8% from 2020-21, when Stony Brook School had 287 students, to 2024-25, when it had 310. From 2020-21 to 2024-25, the ratio fell from 9.0:1 to 8.0:1.
If you have questions about school safety, transportation, and start times at Stony Brook School, you can post them here. Anyone with firsthand experience at this school can post or comment.
Somerset County at a glance
View full county profilePopulation
349,846
Census ACS
Median income
$140,374
Household, ACS
Bachelor's+
58%
Adults 25+
Poverty rate
4%
Below federal line
Schools in county
84
51,276 students
Quick facts
Related schools
Other schools in Branchburg Township School District
- Whiton Elementary SchoolElementary · 617 students
- Branchburg Central Middle SchoolMiddle · 458 students
Other Stony Brook schools
2 other US public schools in 2 states are named Stony Brook. Stony Brook School is the 2nd largest of the 3.
- Stony Brook SchoolNorth Plainfield, NJ · 272 students
- Stony Brook SchoolWestford, MA · 546 students
Nearby schools
- Branchburg Central Middle School0.8 mi · 458
- Milltown Primary School2.0 mi · 348
- Bradley Gardens Primary School2.1 mi · 279
- Whiton Elementary School2.5 mi · 617
- John F. Kennedy Primary School2.7 mi · 431
- Van Holten Primary School3.0 mi · 311
Frequently asked questions
About Stony Brook SchoolWhat is the total enrollment at Stony Brook School?
Stony Brook School enrolls approximately 310 students in grades 04-05.
What age range does Stony Brook School serve?
Stony Brook School serves students from grade 04 through grade 05.
How many students per teacher at Stony Brook School?
Approximately 8.0:1 students per teacher at Stony Brook School.
How diverse is Stony Brook School?
Stony Brook School reports a student body of 61% White, 13% Hispanic, 4% Black, 16% Asian, 6% Two or more.
Who oversees Stony Brook School?
Stony Brook School is overseen by Branchburg Township School District in Somerset County.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.