Seaford Senior High School
🇺🇸 Official data · 2025Seaford, New York 11783 · Seaford Union Free School District
#35 of 1,079 high schools in New York
#40 of 16,910 nationally
About Seaford Senior High School
Seaford Senior High School is a public high located in Seaford, in the Seaford Union Free School District school district of New York, United States. It caters for Grades 9–12. In 2025 it enrolled 650 students. Traditional public schools run by a school district; free to attend.
Its Success Index (US) is 95.8 out of 100, placing it in the top 5% of high schools in United States and 35th of 1,079 ranked high schools in New York. Its strongest component is reading proficiency (99th percentile), and its weakest is students per teacher (89th percentile).
Other published figures: enrollment 650.
There are 5 schools in Seaford; Seaford Senior High School ranks 1st of 5 scored schools there.
Success Index (US) breakdown
Each component is a percentile against high schools across United States.
- Math proficiency (30%)92%
- Reading proficiency (30%)97.5%
- Community advantage (fewer free/reduced-price lunch) (25%)14.6%
- Students per teacher (15%)9.7
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 Seaford Senior High School by the official sources.
- Enrollment
- 650
- Students enrolled in the latest NCES directory year.
- Free/reduced-price lunch
- 14.6%
- Share of students eligible for free or reduced-price lunch.
- Students per teacher
- 9.7
- Enrollment divided by FTE teachers; not class size.
- Reading proficiency
- 97.5%
- Share of tested students proficient or above (all students, all grades).
- Math proficiency
- 92%
- Share of tested students proficient or above (all students, all grades).
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Schools near Seaford Senior High School
Closest schools by straight-line distance, with their Success Index (US).
Seaford Middle School
Seaford · Public middle · Grades 6–8
522 students · 448 m away
Seaford Manor School
Seaford · Public elementary · Grades K–5
468 students · 615 m away
Wantagh School
Wantagh · Public elementary · Grades PK–5
672 students · 1.3 km away
Wantagh Middle School
Wantagh · Public middle · Grades 6–8
645 students · 1.6 km away
Charles E Schwarting School
Massapequa · Public elementary · Grades PK–5
524 students · 1.7 km away
Wantagh Senior High School
Wantagh · Public high · Grades 9–12
826 students · 1.7 km away
Forest Lake School
Wantagh · Public elementary · Grades PK–6
390 students · 1.9 km away
Gen Douglas Macarthur Senior High School
Levittown · Public high · Grades 9–12
1,295 students · 2.2 km away
Plainedge Senior High School
Massapequa · Public high · Grades 9–12
856 students · 2.3 km away
East Broadway School
Seaford · Public elementary · Grades K–5
662 students · 2.3 km away
Similar schools
Public high schools in New York with a comparable Enrollment.
Hornell Junior-Senior High School
Hornell · Public high · Grades 6–12
650 students
Honeoye Falls-Lima Senior High School
Honeoye Falls · Public high · Grades 9–12
649 students
Eden Middle & High School
Eden · Public high · Grades 6–12
652 students
Hudson Falls High School
Hudson Falls · Public high · Grades 9–12
652 students
Veritas Academy
Flushing · Public high · Grades 9–12
653 students
Laboratory School of Finance and Technology (The): X223
Bronx · Public high · Grades 6–12
646 students
Frequently asked questions
Is Seaford Senior High School a good school?
Seaford Senior High School has a Success Index (US) of 95.8 out of 100 (Top 5% of high schools in United States) and ranks #35 of 1,079 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 Seaford Senior High School rank in New York?
Seaford Senior High School ranks #35 of 1,079 high schools in New York and #40 of 16,910 nationally on the Success Index (US) (2025 data).
How many students attend Seaford Senior High School?
Seaford Senior High School had 650 students in 2025.
Is Seaford Senior High School a elementary school or a high school?
Seaford Senior High School is classified as a high covering Grades 9–12. It is a public school.
What other schools are near Seaford Senior High School?
There are 10 schools within 15 km of Seaford Senior High School; they are listed on this page with their Success Index (US) and distance, and can be compared side by side.