Seneca Middle School
🇺🇸 Official data · 2025Holbrook, New York 11741 · Sachem Central School District
#143 of 785 middle schools in New York
#1916 of 15,369 nationally
About Seneca Middle School
Seneca Middle School is a public middle located in Holbrook, in the Sachem Central School District school district of New York, United States. It caters for Grades 6–8. In 2025 it enrolled 928 students. Traditional public schools run by a school district; free to attend.
Its Success Index (US) is 77.5 out of 100, placing it in the top 25% of middle schools in United States and 143rd of 785 ranked middle schools in New York. Its strongest component is math proficiency (93th percentile), and its weakest is reading proficiency (57th percentile).
Other published figures: enrollment 928.
There are 5 schools in Holbrook; Seneca Middle School ranks 1st of 5 scored schools there.
Success Index (US) breakdown
Each component is a percentile against middle schools across United States.
- Math proficiency (30%)76%
- Reading proficiency (30%)52%
- Community advantage (fewer free/reduced-price lunch) (25%)32.7%
- Students per teacher (15%)10.9
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 Seneca Middle School by the official sources.
- Enrollment
- 928
- Students enrolled in the latest NCES directory year.
- Free/reduced-price lunch
- 32.7%
- Share of students eligible for free or reduced-price lunch.
- Students per teacher
- 10.9
- Enrollment divided by FTE teachers; not class size.
- Reading proficiency
- 52%
- Share of tested students proficient or above (all students, all grades).
- Math proficiency
- 76%
- Share of tested students proficient or above (all students, all grades).
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Schools near Seneca Middle School
Closest schools by straight-line distance, with their Success Index (US).
Merrimac School
Holbrook · Public elementary · Grades K–5
358 students · 1.7 km away
Grundy Avenue School
Holbrook · Public elementary · Grades K–5
452 students · 1.9 km away
Tamarac Elementary School
Holbrook · Public elementary · Grades K–5
421 students · 1.9 km away
Nokomis School
Holbrook · Public elementary · Grades K–5
496 students · 2.2 km away
Hiawatha School
Lake Ronkonkoma · Public elementary · Grades K–5
541 students · 2.6 km away
Sagamore Middle School
Holtsville · Public middle · Grades 6–8
893 students · 2.9 km away
Waverly Avenue School
Holtsville · Public elementary · Grades K–5
497 students · 3.2 km away
Chippewa Elementary School
Holtsville · Public elementary · Grades K–5
543 students · 3.3 km away
Samoset Middle School
Lake Ronkonkoma · Public middle · Grades 6–8
847 students · 4.1 km away
Canaan Elementary School
Patchogue · Public elementary · Grades PK–5
596 students · 4.3 km away
Similar schools
Public middle schools in New York with a comparable Enrollment.
Willink Middle School
Webster · Public middle · Grades 6–8
928 students
Carthage Middle School
Carthage · Public middle · Grades 5–8
925 students
Corning-Painted Post Middle School
Painted Post · Public middle · Grades 6–8
925 students
John W Dodd Middle School
Freeport · Public middle · Grades 7–8
924 students
Louis M Klein Middle School
Harrison · Public middle · Grades 6–8
923 students
Jhs 190 Russell Sage
Forest Hills · Public middle · Grades 6–8
935 students
Frequently asked questions
Is Seneca Middle School a good school?
Seneca Middle School has a Success Index (US) of 77.5 out of 100 (Top 25% of middle schools in United States) and ranks #143 of 785 in New York. 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 Seneca Middle School rank in New York?
Seneca Middle School ranks #143 of 785 middle schools in New York and #1916 of 15,369 nationally on the Success Index (US) (2025 data).
How many students attend Seneca Middle School?
Seneca Middle School had 928 students in 2025.
Is Seneca Middle School a elementary school or a high school?
Seneca Middle School is classified as a middle covering Grades 6–8. It is a public school.
What other schools are near Seneca Middle School?
There are 10 schools within 15 km of Seneca Middle School; they are listed on this page with their Success Index (US) and distance, and can be compared side by side.