Enrollment
272
New Jersey · 2024-25 NCES data
Other / mixed grade configuration · North Plainfield, NJ
Stony Brook School
Federal NCES profile for Stony Brook School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 45/100.
2024-25 NCES dataOther / mixed grade configurationNCES 341164005264
👥 S:T ratio 60
🌟 Gifted program 30
🎓 Counselors 46
📋 Attendance 43
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Stony Brook School earns 45/100 on the Resource Investment Index, with class sizes smaller than 72% of New Jersey schools. It is also less racially and ethnically mixed than most New Jersey schools.
- #3 of 3
- schools in North Plainfield · Resource Index
- 45
- Resource Index · Typical
- 10.1:1
- small classes for New Jersey
- 67.3%
- free-lunch eligible
Stony Brook School has class sizes smaller than 72% of New Jersey schools. Computed live against every New Jersey school reporting to NCES.
By Resource Investment Index, Stony Brook School ranks #3 of 3 schools in North Plainfield, NJ.
School address
District: North Plainfield School District · New Jersey
NCES ID 341164005264 Verify on NCES CCD record →
Teachers (FTE)
27.0
Federal CCD staff survey
Students per teacher
10.1:1
vs 11.8:1 New Jersey avg
-14% vs state
Free-lunch eligible
67.3%
vs 29.6% New Jersey avg
+127% vs state
Student-teacher ratio in context
How Stony Brook School compares with New Jersey and U.S. medians
What stands out at Stony Brook School
Stony Brook School is a higher-need, mid-sized combined-grade school in North Plainfield, New Jersey, enrolling 272 students.
Class sizes run a bit leaner than typical: 10.1:1 puts it in the smaller third of New Jersey schools by student-teacher ratio.
Economic need is high: 67.3% of students qualify for free meals, 127% above the New Jersey average, a Title I-weighted population that federal funding formulas prioritise.
Enrollment of 272 puts it in the smaller third of New Jersey schools by headcount.
Its Resource Investment Index lands in the lower third of 2,501 scored New Jersey schools.
Against 126 statewide peers matched on enrollment and economic need, it ranks mid-pack at #65.
Its student body is predominantly Hispanic or Latino (90% of enrollment), among the less diverse in the state (diversity index 19/100).
Counselor coverage runs a bit thin, about 272 students per counselor, somewhat past the ASCA-recommended 250:1 benchmark.
Attendance runs somewhat below the norm, with 22.8% of students chronically absent per the 2021-22 civil-rights collection.
Among North Plainfield's public schools, it stands alongside West End School (600 students): Stony Brook School is smaller than that campus by headcount and runs leaner classes (10.1:1 vs 11.5:1).
North Plainfield School District also operates North Plainfield High School (1,141 students) and West End School (600 students) alongside Stony Brook School.
Sourced from NCES CCD, CRDC, and F-33 (federal records, not a quality verdict). How we source and compute this.
Source: National Center for Education Statistics Common Core of Data + CRDC + F-33 · 2024-25
How Stony Brook School compares
Stony Brook School on the metrics families compare, against New Jersey and U.S. means.
| Metric | This school | vs New Jersey | New Jersey avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 10.1:1 | ▼ 14% | 11.8:1 | 15.7:1 |
| Free-lunch eligible | 67.3% | ▲ 127% | 29.6% | 51.7% |
| Enrollment | 272 | top 80% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
10.1:1
Leaner classes than 88% of US schools, among the more generously staffed nationally.
272
Bigger than 28% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
67.3%
free-lunch eligible
- 127% above the New Jersey average of 29.6%
Well above the 40% Title I schoolwide threshold, among the highest-need profiles in the state; federal funds support the whole school, not individual students.
Staffing depth
10.1:1
students per teacher
- 14% below state mean
Top 28% in New Jersey - lower ratio than 72% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
22.8%
chronically absent (missed 10%+ of school days)
At or above 20%, the commonly used threshold for "high" chronic absenteeism, signaling significant barriers to regular attendance.
Funding equity
$22,832
per pupil, district-wide
- below New Jersey avg of $24,984
Well above the U.S. public-school average, reflecting substantially higher local or state investment per enrolled student.
Support staff
Counselors1.0 FTE
Per 272 students, the combined health-and-guidance staffing load for this school.
Discipline context
0
in-school suspensions + 1 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 0.4 per 100 students. Reported via the Civil Rights Data Collection.
Overview
- Common Core of Data (June 2026): enrollment, staffing, and the student-teacher ratio above.
- Civil Rights Data Collection: discipline counts and program access (AP, gifted, special education).
- F-33 School District Finance Survey: the district-wide per-pupil spending figures below.
Three separate federal collections, each on its own reporting cadence - which is why this school's numbers line up on a consistent basis against every other school and state on this site, rather than mixing figures pulled from different survey years.
Student demographics
Hispanic or Latino 89.7%
White 5.9%
African American 2.2%
Asian 1.5%
Two or More 0.7%
Largest group: Hispanic or Latino at 89.7% of enrollment.
Student-body diversity index 19.1/100
Simpson diversity index - at 19.1, Stony Brook School is less mixed than the New Jersey school average of 51.2.
Programs
Funding & spending
District-wide per-pupil expenditure for North Plainfield School District, which includes Stony Brook School.
$22,832
Per student
-9%
vs New Jersey
Avg $24,984
+38%
vs U.S.
Avg $16,593
Revenue mix
Local 34.7%
State 59.4%
Federal 5.8%
Source: NCES F-33 School District Finance Survey District-level finance · FY 2021-22 Per-pupil expenditure reflects the district-wide average. Individual school budgets are not reported at the federal level.
How Stony Brook School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| North Plainfield High School | Larger | Lower economic need | Similar S:T ratio |
| West End School | Larger | Lower economic need | Similar S:T ratio |
| North Plainfield Middle School | Larger | Lower economic need | Similar S:T ratio |
| Somerset School | Larger | Lower economic need | Similar S:T ratio |
| East End School | Larger | Lower economic need | Similar S:T ratio |
Comparisons are relative to Stony Brook School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,141
- Students per teacher
- 11.5:1
- Resource Index
- 47/100
- Enrollment
- 600
- Students per teacher
- 11.5:1
- Resource Index
- 51/100
- Enrollment
- 538
- Students per teacher
- 10.8:1
- Resource Index
- 50/100
- Enrollment
- 485
- Students per teacher
- 9.2:1
- Resource Index
- 66/100
- Enrollment
- 451
- Students per teacher
- 10.3:1
- Resource Index
- 52/100
Similar other schools in North Plainfield
2 comparable other schools (grades Mixed) serving the same city.
Similar other schools statewide
Matched by enrollment size and by staffing ratio across all of New Jersey, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~272 students)
Next steps
Verify locally before acting on Stony Brook School's federal record.
- Compare Stony Brook School against another school. Compare schools
- North Plainfield School District's spending and staffing shape this school. District profile
- Confirm current enrollment and boundaries with the school. Choosing guide
Federal record (CCD 2024-25, CRDC 2021-22) - PlainSchools assigns no subjective rating; the composite quality score is a transparent, reproducible index computed from this cited federal data.
Frequently asked questions about Stony Brook School
How many students attend Stony Brook School?
Stony Brook School has 272 students enrolled. It is a public school in North Plainfield, NJ.
What is the student-teacher ratio at Stony Brook School?
The student-teacher ratio at Stony Brook School is 10.1:1, which is 14% lower than the New Jersey average of 11.8:1 and 36% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
What percentage of students receive free lunch at Stony Brook School?
67.3% of students at Stony Brook School are eligible for free lunch, compared to the New Jersey average of 29.6%.
What is the racial and ethnic makeup of Stony Brook School?
The largest demographic group at Stony Brook School is Hispanic or Latino at 89.7% of enrollment, in North Plainfield, NJ.
What is the Resource Investment Index for Stony Brook School?
Stony Brook School has a Resource Investment Index of 45/100 (typical reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Stony Brook School rank among schools in North Plainfield?
By Resource Investment Index, Stony Brook School ranks #3 of 3 schools in North Plainfield, NJ. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all schools in North Plainfield on the city page.
Is Stony Brook School a good school?
Stony Brook School earns 45/100 on the Resource Investment Index, with class sizes smaller than 72% of New Jersey schools. It is also less racially and ethnically mixed than most New Jersey schools. This is a resource snapshot, not an academic rating; see the Resource Investment Index question above for what the number does and doesn't measure.
What other schools are in North Plainfield School District?
Besides Stony Brook School, North Plainfield School District also operates North Plainfield High School (1,141 students), West End School (600 students), and North Plainfield Middle School (538 students). See the North Plainfield School District district page for the complete list.
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Every figure on PlainSchools is rendered directly from the source NCES, CRDC and F-33 federal records, no number is typed in by an editor. Each school's figures reflect its most recent NCES/CRDC submission on file. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of June 2026.