Stony Brook School
🇺🇸 Official data · 2025Westford, Massachusetts 01886 · Westford
#38 of 300 middle schools in Massachusetts
#489 of 15,369 nationally
About Stony Brook School
Stony Brook School is a public middle located in Westford, in the Westford school district of Massachusetts, United States. It caters for Grades 6–8. In 2025 it enrolled 546 students. Traditional public schools run by a school district; free to attend.
Its Success Index (US) is 87.8 out of 100, placing it in the top 5% of middle schools in United States and 38th of 300 ranked middle schools in Massachusetts. Its strongest component is math proficiency (95th percentile), and its weakest is students per teacher (69th percentile).
Other published figures: enrollment 546.
There are 9 schools in Westford; Stony Brook School ranks 3rd of 9 scored schools there.
Success Index (US) breakdown
Each component is a percentile against middle schools across United States.
- Math proficiency (30%)81%
- Reading proficiency (30%)74%
- Community advantage (fewer free/reduced-price lunch) (25%)–
- Students per teacher (15%)13.0
The Success Index (US) summarises published data about a school community. It is not a measure of teaching quality. Read the methodology.
Published measures
All figures published for Stony Brook School by the official sources.
- Enrollment
- 546
- Students enrolled in the latest NCES directory year.
- Students per teacher
- 13.0
- Enrollment divided by FTE teachers; not class size.
- Reading proficiency
- 74%
- Share of tested students proficient or above (all students, all grades).
- Math proficiency
- 81%
- Share of tested students proficient or above (all students, all grades).
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Schools near Stony Brook School
Closest schools by straight-line distance, with their Success Index (US).
Blanchard Middle
Westford · Public middle · Grades 6–8
541 students · 2.4 km away
Day Elementary
Westford · Public elementary · Grades 3–5
299 students · 2.6 km away
Nabnasset
Westford · Public elementary · Grades PK–2
345 students · 3.0 km away
Abbot Elementary
Westford · Public elementary · Grades 3–5
371 students · 3.0 km away
Westford Academy
Westford · Public high · Grades 9–12
1,504 students · 3.3 km away
John A. Crisafulli Elementary School
Westford · Public elementary · Grades 3–5
342 students · 3.7 km away
Col John Robinson
Westford · Public elementary · Grades PK–2
346 students · 4.2 km away
Rita E. Miller Elementary School
Westford · Public elementary · Grades PK–2
281 students · 4.4 km away
Tyngsborough Elementary
Tyngsborough · Public elementary · Grades PK–5
715 students · 5.3 km away
Col Moses Parker School
Chelmsford · Public middle · Grades 5–6
778 students · 6.3 km away
Similar schools
Public middle schools in Massachusetts with a comparable Enrollment.
David J. Quinn Middle School
Hudson · Public middle · Grades 5–7
546 students
Robert E. Melican Middle School
Northborough · Public middle · Grades 6–8
545 students
Susan B. Anthony Middle School
Revere · Public middle · Grades 6–8
545 students
Silver Lake Regional Middle School
Kingston · Public middle · Grades 7–8
544 students
Arlington Middle School
Lawrence · Public middle · Grades 5–8
543 students
Garfield Middle School
Revere · Public middle · Grades 6–8
542 students
Frequently asked questions
Is Stony Brook School a good school?
Stony Brook School has a Success Index (US) of 87.8 out of 100 (Top 5% of middle schools in United States) and ranks #38 of 300 in Massachusetts. The index summarises published data about the school community and, where available, attainment; it does not measure teaching quality, so visit the school and ask about support at your child's level.
Where does Stony Brook School rank in Massachusetts?
Stony Brook School ranks #38 of 300 middle schools in Massachusetts and #489 of 15,369 nationally on the Success Index (US) (2025 data).
How many students attend Stony Brook School?
Stony Brook School had 546 students in 2025.
Is Stony Brook School a elementary school or a high school?
Stony Brook School is classified as a middle covering Grades 6–8. It is a public school.
What other schools are near Stony Brook School?
There are 10 schools within 15 km of Stony Brook School; they are listed on this page with their Success Index (US) and distance, and can be compared side by side.