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SCHOOL COMMUNITY·SEAFORD UNION FREE SCHOOL DISTRICT·NCES 362640003620

SEAFORD SENIOR HIGH SCHOOL

1575 SEAMANS NECK RD, SEAFORD, NY 11783 · (516) 592-4380 · Nassau County
GRADES 09–12HIGH21-SUBURBREGULAR SCHOOL650 STUDENTS
B
allk12 Grade
Scored higher than 60% of New York public high schools
  • B+Test scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
  • C+Beats expectations How far test scores land above or below what the share of low-income students predicts for a school in this state.
  • ·Three-year trend Not available for this school, so the grade uses the other parts.

Grades compare a school only with schools in the same state, because every state gives its own test. How grades work · Top-graded New York public high schools

Enrollment
650
High
DISTRICT 546 · STATE 668
Student : Teacher
9.7:1
67 FTE teachers
DISTRICT 9.8:1 · STATE 11.0:1
Free / Reduced Lunch
15%
95 students
DISTRICT 12% · STATE 58%
Community
1
0 members
Enrollment and student:teacher ratio compared against other high schools. Free/Reduced Lunch and demographics compared against all schools.

Enrollment by grade, 2024-25

GradeStudentsShare
Grade 914923%
Grade 1016926%
Grade 1116626%
Grade 1215624%
Ungraded102%
Student demographics
31%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 32% · STATE 72% · US 70%
White
53382%
DISTRICT 82% · STATE 39% · US 43%
Hispanic
7411%
DISTRICT 11% · STATE 31% · US 30%
Black
81%
DISTRICT 1% · STATE 16% · US 15%
Asian
284%
DISTRICT 4% · STATE 10% · US 6%
Two+
71%
DISTRICT 2% · STATE 4% · US 5%
Student head counts by race/ethnicity from federal NCES enrollment data. District, state, and US figures are each group's share of all public school students in that area (US excludes territories). Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
Male
33151%
Female
31949%

School pathway

Feeds from
SEAFORD MIDDLE SCHOOL06–08
Based on grade levels within SEAFORD UNION FREE SCHOOL DISTRICT. Attendance zones can vary; confirm enrollment with the district.

Discussions

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Test scores

NYS Assessments 2024-25 . % Proficient (Level 3 + Level 4)
English Language Arts
98.0%
NY avg 58.3% . -2.0pp since 2023
Math
72.0%
NY avg 57.4% . -11.0pp since 2023

What this means: On the NYS Assessments, New York's statewide test, about 98 of every 100 students at this school read and write at grade level and about 72 of 100 do math at grade level. Across all New York schools, those numbers are about 58 and 57. Reading and writing scores are down about 2 points since 2023, while math scores are down about 11 points.

NYS Assessments results by year

School yearEnglish Language ArtsMath
2024-2598.0%72.0%
2023-24100.0%83.0%
% Proficient (Level 3 + Level 4), all students and all tested grades.
Source: NYS Assessments. All students, all grades. See all years and grades →

BeatsExpectations

Demographically-adjusted score · methodology
Tier
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
71.7%
composite math + reading, all grades
Predicted
69.6%
based on NY schools with similar FRL share
Beats by
+2.0pp
above demographic expectation

What this means: About 72% of students here test proficient in math and reading, compared with the roughly 70% typical for New York schools with a similar share of low-income students. BeatsExpectations measures results against demographically similar schools rather than by raw scores, and this school falls within the typical range, neither among New York's top nor bottom 10%.

BeatsExpectations runs a per-state regression of proficiency on free/reduced-lunch share, then scores each school by residual. How this is calculated →

Schools most like SEAFORD SENIOR HIGH SCHOOL

SEAFORD SENIOR HIGH SCHOOL's state test result (71.7% proficient) is higher than 1 of the 5 schools below with a result.

SchoolStudentsLow-incomeProficient
SEAFORD SENIOR HIGH SCHOOL this school65014.6%71.7%
BABYLON JUNIOR-SENIOR HIGH SCHOOL
BABYLON
66216.2%71.3%
SAYVILLE HIGH SCHOOL
WEST SAYVILLE
81413.6%91.8%
KINGS PARK HIGH SCHOOL
KINGS PARK
82314.3%86.3%
BAYPORT-BLUE POINT HIGH SCHOOL
BAYPORT
57918.7%89.7%
SOMERS SENIOR HIGH SCHOOL
LINCOLNDALE
84713.7%93.3%
Matched among New York high schools on enrollment, the share of students from low-income families (eligible for free or reduced-price lunch), and racial and ethnic makeup. Proficient is the average share of students meeting the state standard across all of the school's state tests in 2023-24 and 2024-25, the same combined score our test-score rankings use. Online schools and schools serving specialized populations are not matched.

Where SEAFORD SENIOR HIGH SCHOOL ranks

Among high schools
MeasureThis schoolIn New YorkIn Nassau County
State test proficiency
ranked highest first
71.7%#314 of 1,135#37 of 57
Math proficiency
ranked highest first
72.0%#235 of 1,109
▼ 57
#31 of 57
▼ 5
Reading proficiency
ranked highest first
98.0%#28 of 1,135
▼ 12
#6 of 56
▼ 4
Enrollment
ranked largest first
650#393 of 1,216#51 of 59
Students per teacher
ranked fewest first
9.7:1#252 of 1,058#9 of 57
Diversity index
ranked most diverse first
31.3%#782 of 1,070#55 of 57
Free and reduced lunch
ranked highest share first
14.6%#1,134 of 1,167#47 of 57
Enrollment change since 2017-18
ranked steepest decline first
-8.6%#480 of 743#15 of 34
Ranked against other public high schools. Online schools are left out of every list, and test-score lists leave out schools that serve specialized populations. Each rank links to the full list. Arrows under a test-score rank show places moved since the prior test year, among schools tested both years.

4-year change

SY 2020-21 vs SY 2024-25
Enrollment
650
-44 (-6%) vs 2020
-8% since 1990-91, when it was 706
Student : Teacher
9.7:1
was 11.0:1
Source: NCES Common Core of Data

Enrollment and staffing by year

School yearStudentsTeachers (FTE)Students per teacherFree and reduced lunch
2024-2565067.29.7:115% (95)
2023-2466866.710.0:115% (97)
2022-2365868.69.6:116% (105)
2020-216946311.0:112% (85)
2017-187116311.3:111% (81)
2015-167056211.4:19% (61)
2010-118436912.2:16% (48)
2000-017495114.7:12% (15)
1990-917065812.2:1N/A
Source: NCES Common Core of Data. Rows are the federal collections on file for SEAFORD SENIOR HIGH SCHOOL.

About SEAFORD SENIOR HIGH SCHOOL

SEAFORD SENIOR HIGH SCHOOL sits in SEAFORD, New York, and is classified as a high school. The school teaches grades 9 through 12 and enrolls 650 students.

A total of 4 schools make up SEAFORD UNION FREE SCHOOL DISTRICT, with 2,184 students enrolled.

A large majority of enrollment at SEAFORD SENIOR HIGH SCHOOL is White, at 82%. Other reported shares: 11% Hispanic and 4% Asian. Nassau County's residents are about 57% White, 25 points below the school's share. On the diversity index, which measures the chance that two random students are from different groups, SEAFORD SENIOR HIGH SCHOOL scores 31%.

SEAFORD SENIOR HIGH SCHOOL has 67.2 full-time-equivalent teachers on staff and a student-to-teacher ratio of 9.7:1. By comparison, the average for high schools in New York is 11.0:1. At SEAFORD SENIOR HIGH SCHOOL, 15% of students qualify for free or reduced-price lunch in 2024-25. That is lower than the 31% average for public schools in Nassau County.

SEAFORD SENIOR HIGH SCHOOL earns a B on the allk12 Grade, which blends test scores, results against poverty-based expectations, and the three-year trend. It scored higher than 60% of New York public high schools.

SEAFORD SENIOR HIGH SCHOOL's actual average proficiency rate across its state test results (71.7%) and its predicted rate (69.6%) put it outside the top and bottom 10% of New York schools.

Five-year Census Bureau estimates for Nassau County show that median household income comes to about $146,202, a bachelor's degree or higher is held by about 50% of adults, and the share of residents below the poverty line is 4%. Nassau County counts 315 public schools with about 200,775 students.

SEAFORD SENIOR HIGH SCHOOL's nearest public school is SEAFORD MIDDLE SCHOOL (about 0.3 miles). In all, at least 8 other public schools sit within five miles of SEAFORD SENIOR HIGH SCHOOL. SEAFORD SENIOR HIGH SCHOOL places 5th of 9 on proficiency among the closest schools that report scores.

For locale, NCES codes SEAFORD SENIOR HIGH SCHOOL as Suburb: Large.

The school's student count fell 6% between the 2020-21 and 2024-25 school years. Over the same period, the student-to-teacher ratio dropped to 9.7:1, from 11.0:1.

People can post here about homework, tutoring, and testing dates and other school topics. Members of the school community can share what they know.

Nassau County at a glance

View full county profile
Population
1,389,591
Census ACS
Median income
$146,202
Household, ACS
Bachelor's+
50%
Adults 25+
Poverty rate
4%
Below federal line
Schools in county
315
200,775 students

Quick facts

School name
SEAFORD SENIOR HIGH SCHOOL
District
SEAFORD UNION FREE SCHOOL DISTRICT
Address
1575 SEAMANS NECK RD, SEAFORD, NY 11783
Phone
(516) 592-4380
County
Nassau County
Level
High
Grade range
09–12
Total enrollment
650
Teachers (FTE)
67
Student–teacher ratio
9.7:1
Free and reduced lunch
95 (15%)
Locale
21-Suburb: Large
NCES ID
362640003620
Charter school
No
Virtual school
No

Related schools

Other schools in SEAFORD UNION FREE SCHOOL DISTRICT
Other schools in SEAFORD
Other Seaford Senior High schools

One other US public school is named Seaford Senior High. SEAFORD SENIOR HIGH SCHOOL is the 2nd largest of the 2.

Nearby schools

Frequently asked questions

About SEAFORD SENIOR HIGH SCHOOL
How many students attend SEAFORD SENIOR HIGH SCHOOL?
SEAFORD SENIOR HIGH SCHOOL enrolls approximately 650 students in grades 09-12.
Is SEAFORD SENIOR HIGH SCHOOL an elementary, middle, or high school?
SEAFORD SENIOR HIGH SCHOOL is a high school covering grades 09-12.
How many teachers does SEAFORD SENIOR HIGH SCHOOL have?
SEAFORD SENIOR HIGH SCHOOL employs 67 FTE teachers, for a student-to-teacher ratio of 9.7:1.
What is the racial breakdown of students at SEAFORD SENIOR HIGH SCHOOL?
At SEAFORD SENIOR HIGH SCHOOL, the student body is approximately 82% White, 11% Hispanic, 1% Black, 4% Asian, 1% Two or more.
Is SEAFORD SENIOR HIGH SCHOOL public or private?
SEAFORD SENIOR HIGH SCHOOL is a public K-12 school, overseen by SEAFORD UNION FREE SCHOOL DISTRICT.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.
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