Excellent
#535 of 4,739 schools in NY
Top 11% in state
Islip High School
High School · ISLIP UNION FREE SCHOOL DISTRICT
2508 UNION BLVD, Islip, NY 11751
Enrollment
891
Student-Teacher
9.1:1
Score
8.1
Grades
9th – 12th
Enrollment
891
Student-Teacher
9.1:1
Score
8.1
Grades
9th – 12th
Updated
2022-23
Updated 2022-23
How this school compares
In Islip
#2 of 5
public schools
New York high schools
#120 of 1,160
In district
#2 of 5
ISLIP UNION FREE SCHOOL DISTRICT
School environment
9.6 / 10
Exceptional
About Islip High School
Islip High School is a public high school in Islip, NY, part of the ISLIP UNION FREE SCHOOL DISTRICT. The school serves approximately 891 students in grades 9th – 12th with a student-teacher ratio of 9.1:1. It holds a MySchoolScout rating of 8.1/10, placing it in the 88.7th percentile among NY schools — an above average rating overall.
Students demonstrate 91% proficiency in math and 95% in reading/language arts. The school scores particularly well in school environment (9.6/10). Located in a neighborhood with a median household income of $116,328, where 36% of adults hold a bachelor's degree or higher.
The school is situated in a large suburban setting.
What Parents Should Know
With a student-teacher ratio of 9.1:1, Islip High School offers a notably low ratio compared to the national average. This typically means smaller class sizes and more opportunities for one-on-one interaction between students and teachers.
Score Breakdown
Full Profile · 4/4 metricsView breakdown
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Islip High School — Students at Islip High School score 90% proficient, which is above what's typical for similar communities (expected: 62%).
Equity & Diversity
Shown separately, not included in overall scoreFree/Reduced Lunch
38.9%
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: 5.6/10.
How Islip High School Compares
See how Islip High School performs across key quality dimensions compared to state benchmarks.
Funding & Resources
Performance Trends
Math proficiency has declined from 93% (2019) to 88% (2021). Reading/ELA proficiency has declined from 97% (2019) to 93% (2021).
Location
2508 UNION BLVD, Islip, NY 11751
Nearby Alternatives
Families considering Islip High School may also want to explore other high schools in the area. EAST ISLIP HIGH SCHOOL (rated 8.4/10, 2.4 miles away, in nearby Islip Terrace), which scores slightly higher. Additionally, BAY SHORE SENIOR HIGH SCHOOL (rated 7.3/10, 1.8 miles away, in nearby Bay Shore), with a comparable rating. For more schools in Islip, see our Islip schools guide .
Nearby Schools
20 within 2.9 mi| School | Distance | Rating |
|---|---|---|
| ISLIP MIDDLE SCHOOL Islip | 0.2 mi | 6.7 |
| COMMACK ROAD ELEMENTARY SCHOOL Islip | 0.9 mi | 5.7 |
| MAUD S SHERWOOD ELEMENTARY SCHOOL Islip | 0.9 mi | 8.7 |
| WING ELEMENTARY SCHOOL Islip | 0.9 mi | 8.0 |
| BROOK AVENUE ELEMENTARY SCHOOL Bay Shore | 1.3 mi | 6.2 |
| ST MARY SCHOOL East Islip | 1.3 mi | 5.6 |
| LORETTA PARK ELEMENTARY SCHOOL Brentwood | 2.1 mi | 4.8 |
| LAUREL PARK ELEMENTARY SCHOOL Brentwood | 2.1 mi | 5.2 |
| BAY SHORE SENIOR HIGH SCHOOL Bay Shore | 1.8 mi | 7.3 |
| JOHN F KENNEDY ELEMENTARY SCHOOL East Islip | 1.8 mi | 7.0 |
| BAY SHORE MIDDLE SCHOOL Bay Shore | 1.9 mi | 5.6 |
| ST PATRICK SCHOOL Bay Shore | 1.9 mi | 5.2 |
| SOUTHEAST ELEMENTARY SCHOOL Brentwood | 2.4 mi | 6.2 |
| MARY G CLARKSON SCHOOL Bay Shore | 2.1 mi | 6.2 |
| FIFTH AVENUE SCHOOL Bay Shore | 2.1 mi | 6.2 |
| RUTH C KINNEY ELEMENTARY SCHOOL Islip Terrace | 2.5 mi | 8.1 |
| EAST ISLIP MIDDLE SCHOOL Islip Terrace | 2.4 mi | 6.9 |
| EAST ISLIP HIGH SCHOOL Islip Terrace | 2.4 mi | 8.4 |
| OAK PARK ELEMENTARY SCHOOL Bay Shore | 2.7 mi | 6.8 |
| SOUTH MIDDLE SCHOOL Brentwood | 2.9 mi | 5.1 |
Neighborhood Census ACS (2019-2023)
Census data for ZIP 11751 (ACS 2019-2023 5-Year Estimates) · Data sources
Median Income
$116,328
Median Home Value
$501,900
Median Rent
$2,238/mo
Population
13,152
College Educated
36%
Homeownership
83.4%
Avg Commute
29.6 min
Poverty Rate
5.6%
Median Age
46.6
Community Profile
The community surrounding Islip High School has a median household income of $116,328. It is an area where 36% of adults hold a bachelor's degree or higher. The median home value in the area is $501,900, with a median rent of $2,238/month. The local poverty rate of 5.6% is relatively low. The average commute for residents is 30 minutes. Source: U.S. Census ACS 2022 5-Year Estimates.
Similar Schools
Schools in the same state with comparable level, size, and ratings
| School | Rating |
|---|---|
| BOERUM HILL SCHOOL FOR INTERNATIONAL STUDIES (THE) Brooklyn, NY | 8.1 |
| COLUMBIA SECONDARY SCHOOL New York, NY | 8.1 |
| EAST-WEST SCHOOL OF INTERNATIONAL STUDIES Flushing, NY | 8.1 |
| JOHN JAY HIGH SCHOOL Katonah, NY | 8.1 |
| PLATTSBURGH SENIOR HIGH SCHOOL Plattsburgh, NY | 8.1 |
| SHOREHAM-WADING RIVER HIGH SCHOOL Shoreham, NY | 8.1 |
Frequently Asked Questions
Common questions about Islip High School
What grades does Islip High School serve?
Islip High School serves students in grades 9th through 12th.
How many students attend Islip High School?
Islip High School has an enrollment of approximately 891 students.
What is the student-teacher ratio at Islip High School?
The student-teacher ratio at Islip High School is 9.1:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.
How does Islip High School rank in NY?
Islip High School is ranked #535 out of 4,739 schools in NY.
What is Islip High School's MySchoolScout rating?
Islip High School has a composite rating of 8.1 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 Islip High School?
Based on the most recent state assessment data, Islip High School has 90.5% math proficiency and 95.0% reading/ELA proficiency.
Is Islip High School a charter school?
No, Islip High School is not a charter school. It is a traditional public school operated by the local school district.
Is Islip High School a Title I school?
No, Islip High School is not currently a Title I school.
What does the Free & Reduced Lunch percentage mean for Islip High School?
38.9% of students at Islip 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.
Explore More Schools
Neighborhood Context
Powered by 
FBI UCR 2024. County-level only. Data >1 year old.
Quick Facts NCES CCD (SY 2022-23)
- Grades
- 9th – 12th
- Enrollment
- 891
- Student-Teacher Ratio
- 9.1:1
- Teachers (FTE)
- 98
- Free/Reduced Lunch
- 38.9%
- Type
- regular
- Setting
- Large Suburb
- County
- Suffolk County
- Phone
- (631) 650-8301
- Data Year
- 2023–2024
Resources & Links
District
ISLIP UNION FREE SCHOOL DISTRICT- District Enrollment
- 2,722
- Schools in District
- 5
- Per-Pupil Spending
- $33,390
- District Rank
- #2 of 5
Other Schools in This District
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
- Best Public Schools in New York 2026: Top Districts from NYC to the Suburbsbest schools
- Best Schools in New York, NY — 2026 Rankingsbest schools
- 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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