Average
#3152 of 4,739 schools in NY
William Floyd High School
High School · WILLIAM FLOYD UNION FREE SCHOOL DISTRICT
240 MASTIC BEACH RD, Mastic Beach, NY 11951
Enrollment
3,123
Student-Teacher
14:1
Score
5.7
Grades
9th – 12th
Enrollment
3,123
Student-Teacher
14:1
Score
5.7
Grades
9th – 12th
Updated
2022-23
Updated 2022-23
How this school compares
In Mastic Beach
#3 of 3
public schools
New York high schools
#842 of 1,160
In district
#8 of 9
WILLIAM FLOYD UNION FREE SCHOOL DISTRICT
Academic performance
8.5 / 10
Exceptional
About William Floyd High School
William Floyd High School serves 3,123 students in grades 9-12 in Mastic Beach, making it one of the larger high schools on Long Island. With 223 full-time equivalent teachers, the school maintains a reasonable 14:1 student-teacher ratio that allows for more personalized attention than many large schools can offer. The school currently holds a MySchoolScout rating of 4.0 out of 10 and ranks in the 26th percentile among New York high schools, indicating significant room for academic growth.
As a regular public school in Suffolk County, William Floyd serves a diverse student population with varying educational needs and backgrounds. The surrounding Mastic Beach community reflects a mixed economic profile, with a median household income of $99,040 and median home values around $296,500. However, the area also faces challenges, including a poverty rate of 17.4% and relatively low college attainment rates, with only 19% of residents holding bachelor's degrees or higher.
Located in a large suburban setting, William Floyd High School sits in a community of nearly 15,000 residents along Long Island's South Shore. The school serves families in an area that balances suburban convenience with the economic realities of a working-class community, providing educational opportunities for students from varied socioeconomic backgrounds.
What's said publicly about William Floyd High School
Synthesized from public, attributable sources. Updated April 2026.
Sources (2)
What Parents Should Know
William Floyd High School is a large school with 3,123 students enrolled. Larger schools typically offer a wider range of academic programs, electives, and extracurricular activities. Parents may want to ask about how the school maintains a sense of community and ensures students don't get lost in the crowd.
Score Breakdown
Full Profile · 4/4 metricsView breakdown
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William Floyd High School — Students at William Floyd High School score 76% proficient, which is above what's typical for similar communities (expected: 58%).
Equity & Diversity
Shown separately, not included in overall scoreFree/Reduced Lunch
53.3%
Students qualifying for federal meal assistance
Test Scores NY EDFACTS (2020-21)
Based on 4 test records from NY state assessments. About our data
Proficiency Trend
↓ DecliningAverage proficiency (% at or above grade level) across Math & ELA over time.
* COVID-affected year — test participation was uneven nationwide. This data is weighted at 50% in the Growth score calculation.
Source: EdFacts (NCES) and state assessment data. Growth score: 6.1/10.
How William Floyd High School Compares
See how William Floyd High School performs across key quality dimensions compared to state benchmarks.
Funding & Resources
Performance Trends
Math proficiency has remained stable from 67% (2019) to 65% (2021). Reading/ELA proficiency has declined from 91% (2019) to 87% (2021).
Location
240 MASTIC BEACH RD, Mastic Beach, NY 11951
Nearby Alternatives
Families considering William Floyd High School may also want to explore other high schools in the area. BELLPORT SENIOR HIGH SCHOOL (rated 7.1/10, 3.8 miles away, in nearby Brookhaven), which scores notably higher. Another option is CENTER MORICHES HIGH SCHOOL (rated 6.5/10, 2.9 miles away, in nearby Center Moriches), which scores slightly higher. Additionally, EASTPORT-SOUTH MANOR JUNIOR SENIOR HIGH SCHOOL (rated 6.1/10, 3.8 miles away, in nearby Manorville), which scores slightly higher. For more schools in Mastic Beach, see our Mastic Beach schools guide .
Nearby Schools
20 within 4.7 miNeighborhood Census ACS (2019-2023)
Census data for ZIP 11951 (ACS 2019-2023 5-Year Estimates) · Data sources
Median Income
$108,877
Median Home Value
$321,200
Median Rent
$2,313/mo
Population
15,830
College Educated
20.5%
Homeownership
81.2%
Avg Commute
37.8 min
Poverty Rate
22.2%
Median Age
38.4
Community Profile
The community surrounding William Floyd High School has a median household income of $108,877. It is a community where 21% of adults hold a bachelor's degree or higher. The median home value in the area is $321,200, with a median rent of $2,313/month. The area has a poverty rate of 22.2%, indicating some economic challenges in the community. The average commute in the area is 38 minutes, which is above the national average. Source: U.S. Census ACS 2022 5-Year Estimates.
Similar Schools
Schools in the same state with comparable level, size, and ratings
| School | Rating |
|---|---|
| JOHN BOWNE HIGH SCHOOL Flushing, NY | 5.7 |
| FRANKLIN DELANO ROOSEVELT HIGH SCHOOL Brooklyn, NY | 5.8 |
| FREEPORT HIGH SCHOOL Freeport, NY | 5.8 |
| NIAGARA FALLS HIGH SCHOOL Niagara Falls, NY | 5.5 |
| RIVERHEAD SENIOR HIGH SCHOOL Riverhead, NY | 5.5 |
| THOMAS A EDISON CAREER AND TECHNICAL EDUCATION HIGH SCHOOL Jamaica, NY | 5.9 |
Frequently Asked Questions
Common questions about William Floyd High School
What grades does William Floyd High School serve?
William Floyd High School serves students in grades 9th through 12th.
How many students attend William Floyd High School?
William Floyd High School has an enrollment of approximately 3,123 students.
What is the student-teacher ratio at William Floyd High School?
The student-teacher ratio at William Floyd High School is 14:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.
How does William Floyd High School rank in NY?
William Floyd High School is ranked #3152 out of 4,739 schools in NY.
What is William Floyd High School's MySchoolScout rating?
William Floyd High School has a composite rating of 5.7 out of 10 on MySchoolScout. This score combines academic performance, student growth, and school environment into a single score. Equity data is shown separately for context.
What are the test scores at William Floyd High School?
Based on the most recent state assessment data, William Floyd High School has 66.0% math proficiency and 89.0% reading/ELA proficiency.
Is William Floyd High School a charter school?
No, William Floyd High School is not a charter school. It is a traditional public school operated by the local school district.
Is William Floyd High School a Title I school?
No, William Floyd High School is not currently a Title I school.
What does the Free & Reduced Lunch percentage mean for William Floyd High School?
53.3% of students at William Floyd High School qualify for free or reduced-price lunch. This is a commonly used indicator of economic need and provides important context when interpreting test scores.
Neighborhood Context
Quick Facts NCES CCD (SY 2022-23)
- Grades
- 9th – 12th
- Enrollment
- 3,123
- Student-Teacher Ratio
- 14:1
- Teachers (FTE)
- 223
- Free/Reduced Lunch
- 53.3%
- Type
- regular
- Setting
- Large Suburb
- County
- Suffolk County
- Phone
- (631) 874-1660
- Data Year
- 2023–2024
Resources & Links
District
WILLIAM FLOYD UNION FREE SCHOOL DISTRICT- District Enrollment
- 9,417
- Schools in District
- 9
- Per-Pupil Spending
- $29,684
- District Rank
- #8 of 9
How We Rate Schools
Every school receives a composite score from 1 to 10 based on four pillars: Academic Performance (50%), Student Growth (20%), Equity (15%), and Learning Environment (15%). Scores are built from publicly available data including standardized test results, enrollment figures, and school climate indicators.
Read our full methodologyRelated reading
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- Best States for Public Schools in 2026: A Complete Rankingdata insights
- Charter Schools vs Public Schools: What the Data Actually Shows (2026)school choice
- Student-Teacher Ratio by State: Complete 2026 Rankingsdata insights
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