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SCHOOL COMMUNITY·WILLIAM FLOYD UNION FREE SCHOOL DISTRICT·NCES 361869004672

WILLIAM FLOYD HIGH SCHOOL

240 MASTIC BEACH RD, MASTIC BEACH, NY 11951 · (631) 874-1660 · Suffolk County
GRADES 09–12HIGH21-SUBURBTITLE IREGULAR SCHOOL3,107 STUDENTS
D
allk12 Grade
Scored higher than 11% of New York public high schools
  • C-Test scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
  • FBeats 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
3,107
High
DISTRICT 1,043 · STATE 668
Student : Teacher
13.9:1
223 FTE teachers
DISTRICT 12.7:1 · STATE 11.0:1
Free / Reduced Lunch
51%
1,583 students
DISTRICT 52% · 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 970023%
Grade 1073624%
Grade 1180026%
Grade 1281626%
Ungraded552%
Student demographics
66%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 65% · STATE 72% · US 70%
White
86628%
DISTRICT 27% · STATE 39% · US 43%
Hispanic
1,48848%
DISTRICT 50% · STATE 31% · US 30%
Black
51617%
DISTRICT 15% · STATE 16% · US 15%
Asian
732%
DISTRICT 2% · STATE 10% · US 6%
Two+
1465%
DISTRICT 5% · STATE 4% · US 5%
Native American
80%
DISTRICT 0% · STATE 1% · US 1%
Pacific Islander
100%
DISTRICT 0% · STATE 0% · US 0%
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
1,58651%
Female
1,52149%

School pathway

Feeds from
WILLIAM FLOYD MIDDLE SCHOOL06–08WILLIAM PACA MIDDLE SCHOOL06–08
Based on grade levels within WILLIAM FLOYD 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
70.0%
NY avg 58.3% . -10.0pp since 2023
Math
23.0%
NY avg 57.4% . -3.0pp since 2023

What this means: On the NYS Assessments, New York's statewide test, about 70 of every 100 students at this school read and write at grade level and about 23 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 10 points since 2023, while math scores are down about 3 points.

NYS Assessments results by year

School yearEnglish Language ArtsMath
2024-2570.0%23.0%
2023-2480.0%26.0%
% 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
41.7%
composite math + reading, all grades
Predicted
56.3%
based on NY schools with similar FRL share
Beats by
-14.6pp
below demographic expectation

What this means: About 42% of students here test proficient in math and reading, compared with the roughly 56% 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 WILLIAM FLOYD HIGH SCHOOL

WILLIAM FLOYD HIGH SCHOOL's state test result (41.7% proficient) is higher than 0 of the 5 schools below with a result.

SchoolStudentsLow-incomeProficient
WILLIAM FLOYD HIGH SCHOOL this school3,10750.9%41.7%
PATCHOGUE-MEDFORD HIGH SCHOOL
MEDFORD
2,48751.7%70.0%
NEWBURGH FREE ACADEMY
NEWBURGH
3,55049.7%45.0%
NEW ROCHELLE HIGH SCHOOL
NEW ROCHELLE
3,04758.8%56.0%
NORTH ROCKLAND HIGH SCHOOL
THIELLS
2,79855.5%67.3%
WHITE PLAINS SENIOR HIGH SCHOOL
WHITE PLAINS
2,23949.8%62.2%
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 WILLIAM FLOYD HIGH SCHOOL ranks

Among high schools
MeasureThis schoolIn New YorkIn Suffolk County
State test proficiency
ranked highest first
41.7%#900 of 1,135#56 of 57
Math proficiency
ranked highest first
23.0%#982 of 1,109
▼ 49
#57 of 57
▼ 4
Reading proficiency
ranked highest first
70.0%#583 of 1,135
▼ 107
#49 of 56
▼ 7
Enrollment
ranked largest first
3,107#14 of 1,216#2 of 59
Students per teacher
ranked fewest first
13.9:1#924 of 1,058#51 of 57
Diversity index
ranked most diverse first
66.3%#150 of 1,070#7 of 57
Free and reduced lunch
ranked highest share first
50.9%#679 of 1,167#11 of 57
Enrollment change since 2017-18
ranked fastest growth first
+13.2%#110 of 339#4 of 12
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
3,107
+277 (+10%) vs 2020
+13% since 1990-91, when it was 2,752
Student : Teacher
13.9:1
was 14.7:1
Source: NCES Common Core of Data

Enrollment and staffing by year

School yearStudentsTeachers (FTE)Students per teacherFree and reduced lunch
2024-253,107223.313.9:151% (1,583)
2023-243,123223.813.9:153% (1,666)
2022-233,013217.413.9:154% (1,620)
2020-212,83019214.7:160% (1,697)
2017-182,745189.514.5:159% (1,614)
2015-162,76817815.6:152% (1,439)
2010-113,11718217.1:134% (1,057)
2000-012,71315517.5:137% (1,001)
1990-912,75215617.6:1N/A
Source: NCES Common Core of Data. Rows are the federal collections on file for WILLIAM FLOYD HIGH SCHOOL.

About WILLIAM FLOYD HIGH SCHOOL

This page covers WILLIAM FLOYD HIGH SCHOOL, a large high school in MASTIC BEACH, New York. The latest federal count shows 3,107 students in grades 9 through 12. Against the 668-student average for high schools in New York, enrollment here is 365% higher.

WILLIAM FLOYD UNION FREE SCHOOL DISTRICT (9 schools, 9,386 students) runs WILLIAM FLOYD HIGH SCHOOL.

Federal enrollment data show Hispanic students as the largest group at WILLIAM FLOYD HIGH SCHOOL, at 48%. Beyond that, enrollment is 28% White, 17% Black, 5% multiracial, and 2% Asian. The Hispanic share of the county population is lower, at 23%. Pick two students at random and there is a 66% chance they belong to different racial or ethnic groups; that figure is the school's diversity index.

WILLIAM FLOYD HIGH SCHOOL's 223.3 full-time-equivalent teachers put its ratio at 13.9:1. On average, high schools in New York have 11.0:1, compared with 13.9:1 here. The school's rate of free or reduced-price lunch eligibility is 51%. The 39% average for public schools in Suffolk County is 12 points lower.

Measured against New York public high schools, WILLIAM FLOYD HIGH SCHOOL receives a D. The grade weighs proficiency most heavily, then how results compare with what the school's low-income share predicts, then the three-year change.

Based on student poverty, the model expects 56.3% at WILLIAM FLOYD HIGH SCHOOL; the school's average proficiency rate on state tests is 41.7%.

Among Suffolk County residents, the median household income is $130,686, about 40% of adults have at least a bachelor's degree, and the poverty rate is about 4%. Besides WILLIAM FLOYD HIGH SCHOOL, Suffolk County has 342 other public schools.

NATHANIEL WOODHULL ELEMENTARY SCHOOL is located about 0.2 miles from WILLIAM FLOYD HIGH SCHOOL. The five-mile area around WILLIAM FLOYD HIGH SCHOOL holds at least 8 other public schools. The school's 41.7% average proficiency ranks 6th among 8 nearby schools.

By NCES locale, the school is Suburb: Large, or in a suburban area outside a principal city, within an urbanized area with a population of 250,000 or more.

Enrollment has grown by 277 students since 2020-21, to 3,107.

Topics for discussion here include school events, clubs, and volunteer needs. Alumni can share how the school prepared them.

Suffolk County at a glance

View full county profile
Population
1,530,146
Census ACS
Median income
$130,686
Household, ACS
Bachelor's+
40%
Adults 25+
Poverty rate
4%
Below federal line
Schools in county
343
222,439 students

Quick facts

School name
WILLIAM FLOYD HIGH SCHOOL
District
WILLIAM FLOYD UNION FREE SCHOOL DISTRICT
Address
240 MASTIC BEACH RD, MASTIC BEACH, NY 11951
Phone
(631) 874-1660
County
Suffolk County
Level
High
Grade range
09–12
Total enrollment
3,107
Teachers (FTE)
223
Student–teacher ratio
13.9:1
Free and reduced lunch
1,583 (51%)
Locale
21-Suburb: Large
NCES ID
361869004672
Charter school
No
Virtual school
No

Related schools

Other schools in WILLIAM FLOYD UNION FREE SCHOOL DISTRICT
Other schools in MASTIC BEACH
Nearby schools

Frequently asked questions

About WILLIAM FLOYD HIGH SCHOOL
How many students attend WILLIAM FLOYD HIGH SCHOOL?
WILLIAM FLOYD HIGH SCHOOL enrolls approximately 3,107 students in grades 09-12.
Is WILLIAM FLOYD HIGH SCHOOL an elementary, middle, or high school?
WILLIAM FLOYD HIGH SCHOOL is a high school covering grades 09-12.
How many teachers does WILLIAM FLOYD HIGH SCHOOL have?
WILLIAM FLOYD HIGH SCHOOL employs 223 FTE teachers, for a student-to-teacher ratio of 13.9:1.
What is the student diversity at WILLIAM FLOYD HIGH SCHOOL?
Student demographics at WILLIAM FLOYD HIGH SCHOOL are roughly 28% White, 48% Hispanic, 17% Black, 2% Asian, 5% Two or more.
Is WILLIAM FLOYD HIGH SCHOOL public or private?
WILLIAM FLOYD HIGH SCHOOL is a public K-12 school, overseen by WILLIAM FLOYD UNION FREE SCHOOL DISTRICT.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.
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