Enrollment
546
Massachusetts · 2024-25 NCES data
Middle school (grades 6-8) · Westford, MA
Stony Brook School
Federal NCES profile for Stony Brook School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 58/100.
2024-25 NCES dataMiddle school (grades 6-8)NCES 251266002080
👥 S:T ratio 54
🌟 Gifted program 30
🎓 Counselors 78
📋 Attendance 69
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Stony Brook School earns 58/100 on the Resource Investment Index, with class sizes near the Massachusetts median.
- #1 of 10
- public schools in Westford · Resource Index
- 58
- Resource Index · Higher
- 11.4:1
- students per teacher
- 546
- students enrolled
Stony Brook School has class sizes near the Massachusetts median. Computed live against every Massachusetts school reporting to NCES.
By Resource Investment Index, Stony Brook School ranks #1 of 10 public schools in Westford, MA.
School address
District: Westford · Massachusetts
NCES ID 251266002080 Verify on NCES CCD record →
Teachers (FTE)
48.0
Federal CCD staff survey
Students per teacher
11.4:1
vs 12.3:1 Massachusetts avg
-7% vs state
Student-teacher ratio in context
How Stony Brook School compares with Massachusetts and U.S. medians
What stands out at Stony Brook School
Stony Brook School is a mid-sized middle school in Westford, Massachusetts, enrolling 546 students.
At 11.4:1, its student-teacher ratio sits close to the Massachusetts median, within a few percentage points of the 12.3:1 state norm, neither notably crowded nor notably small.
Enrollment of 546 puts it in the larger third of Massachusetts schools by headcount.
Its Resource Investment Index outscores 96% of the 1,831 Massachusetts schools with a score on record, a top-tier result on this measure.
Its student body is led by White (65%) and Asian (29%) (diversity index 49/100).
Counselor coverage is strong, about 109 students per counselor, inside the American School Counselor Association's recommended 250:1.
12.5% of students were chronically absent in the 2021-22 collection, in line with the post-pandemic national range.
Among Westford's middle schools, it stands alongside Blanchard Middle (541 students): Stony Brook School is larger than that campus by headcount and runs leaner classes (11.4:1 vs 11.5:1).
Westford also operates Westford Academy (1,504 students) and Blanchard Middle (541 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 Massachusetts and U.S. means.
| Metric | This school | vs Massachusetts | Massachusetts avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 11.4:1 | ▼ 7% | 12.3:1 | 15.7:1 |
| Enrollment | 546 | top 31% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
11.4:1
Leaner classes than 80% of US schools, among the more generously staffed nationally.
546
Bigger than 67% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Staffing depth
11.4:1
students per teacher
- 7% below state mean
Top 41% in Massachusetts - lower ratio than 59% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
12.5%
chronically absent (missed 10%+ of school days)
In the 10-15% range, above the pre-pandemic national baseline but within the broader post-pandemic picture.
Funding equity
$22,747
per pupil, district-wide
- above Massachusetts avg of $22,458
Well above the U.S. public-school average, reflecting substantially higher local or state investment per enrolled student.
Support staff
Counselors5.0 FTE
Per 109 students, the combined health-and-guidance staffing load for this school.
Discipline context
0
in-school suspensions + 0 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 0.0 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
White 64.7%
Asian 29.3%
Hispanic or Latino 3.1%
African American 1.5%
Two or More 1.1%
American Indian / Alaska Native 0.2%
Native Hawaiian / Pacific Islander 0.2%
Largest group: White at 64.7% of enrollment.
Student-body diversity index 49.4/100
Simpson diversity index - at 49.4, Stony Brook School is more mixed than the Massachusetts school average of 47.3.
Programs
Funding & spending
District-wide per-pupil expenditure for Westford, which includes Stony Brook School.
$22,747
Per student
+1%
vs Massachusetts
Avg $22,458
+37%
vs U.S.
Avg $16,593
Revenue mix
Local 69.7%
State 26.2%
Federal 4.1%
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 |
|---|---|---|---|
| Westford Academy | Larger | No free-lunch data | Higher S:T ratio |
| Blanchard Middle | Similar size | No free-lunch data | Similar S:T ratio |
| Abbot Elementary | Smaller | No free-lunch data | Similar S:T ratio |
| Col John Robinson | Smaller | No free-lunch data | Higher S:T ratio |
| Nabnasset | Smaller | No free-lunch data | 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
- 1,504
- Students per teacher
- 13.3:1
- Resource Index
- 55/100
- Enrollment
- 541
- Students per teacher
- 11.5:1
- Resource Index
- 58/100
- Enrollment
- 371
- Students per teacher
- 12:1
- Resource Index
- 53/100
- Enrollment
- 346
- Students per teacher
- 15:1
- Resource Index
- 49/100
- Enrollment
- 345
- Students per teacher
- 12.3:1
- Resource Index
- 44/100
Similar middle schools in Westford
1 comparable middle schools (grades 6-8) serving the same city.
Similar middle schools statewide
Matched by enrollment size and by staffing ratio across all of Massachusetts, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~546 students)
Similar student-teacher ratio (~11.4:1)
Next steps
Verify locally before acting on Stony Brook School's federal record.
- Compare Stony Brook School against another school. Compare schools
- Westford'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 546 students enrolled. It is a middle school in Westford, MA.
What is the student-teacher ratio at Stony Brook School?
The student-teacher ratio at Stony Brook School is 11.4:1, which is 7% lower than the Massachusetts average of 12.3:1 and 27% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
What is the racial and ethnic makeup of Stony Brook School?
The largest demographic group at Stony Brook School is White at 64.7% of enrollment, in Westford, MA.
What is the Resource Investment Index for Stony Brook School?
Stony Brook School has a Resource Investment Index of 58/100 (higher 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 public schools in Westford?
By Resource Investment Index, Stony Brook School ranks #1 of 10 public schools in Westford, MA. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all public schools in Westford on the city page.
Is Stony Brook School a good school?
Stony Brook School earns 58/100 on the Resource Investment Index, with class sizes near the Massachusetts median. 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 Westford?
Besides Stony Brook School, Westford also operates Westford Academy (1,504 students), Blanchard Middle (541 students), and Abbot Elementary (371 students). See the Westford district page for the complete list.
Related tools
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.