Excellent
#328 of 4,742 schools in NY
Top 7% in state
Islip High School
High School · Islip Union Free School District · Islip, NY
An Islip Union Free School District high school where students score 35 points above what's typical for similar communities.
2508 UNION BLVD, Islip, NY 11751
- Math 88% proficient (2021)
- Reading 93% proficient (2021)
- 97.0% 4-year graduation
Academics
Full Profile · 4/4 metricsView breakdown
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Students at Islip High School score 90% proficient, which is above what's typical for similar communities (expected: 56%).
2021 EdFacts proficiency
Most recent published year. School vs. NY average.
Trend
→ SteadyProficiency is down 8 points across the 13-year record (2009–2021) and has held near 91% recently.
Show all 13 years
Multi-year averages used by the rating model: math 93% (multi-year average, 2009-2021) · reading/ELA 96% (multi-year average, 2009-2021)
* COVID-affected year — test participation was uneven nationwide. This data is weighted at 50% in the Growth score calculation.
Based on 26 test records from NY state assessments and EdFacts (NCES).
Equity & diversity
Shown separately, not included in the overall scoreFree/reduced lunch
38.9%
Students qualifying for federal meal assistance
How we rate schools
A clear 1–10 score built from public data — growth, academics, and learning environment. No hidden criteria, no pay-to-play.
See how we rateThe neighborhood
Where Islip High School sits, and what the surrounding area looks like.
Nearby same-level schools are colored by their score. Pins are locations, not attendance boundaries. Open the New York map →
Getting around & local context
- Walk 53Somewhat Walkable
- Bike 45Somewhat Bikeable
- County Safety: Low3/100K
Powered by
FBI Uniform Crime Reporting · 2024 · county context, not school-level safety or attendance eligibility. Source details
Source period: 2024. A newer release may be available.
Area profileU.S. Census ACS 5-year estimates (ACS 2019–2023 5-year estimates)
Median income
$116,328
Median home value
$501,900
Median rent
$2,238/mo
College educated
36%
Homeownership
83.4%
Poverty rate
5.6%
ACS 2019–2023 5-year estimates for the ZCTA associated with school ZIP 11751; this is area context, not an attendance boundary.
Programs & students
Programs & Offerings
Compare nearby
Nearby same-level schools
4 from a 5-mile search
| School | Score | Grades | Distance | Enrollment | Compare |
|---|---|---|---|---|---|
| Bay Shore Senior High SchoolEnrollment path unverified | 8.4 | 9–12 | 1.8 mi | 1,893 | Compare → |
| East Islip High SchoolEnrollment path unverified | 8.8 | 9–12 | 2.4 mi | 1,178 | Compare → |
| Brentwood High SchoolEnrollment path unverified | 6.8 | 9–12 | 3.5 mi | 4,803 | Compare → |
| Freshman CenterEnrollment path unverified | 4.3 | 9 | 4.5 mi | 1,254 | Compare → |
Distance is proximity only; it is not attendance eligibility.
Enrollment path unverified: Potential public school; its attendance or application path has not been classified.
Islip Union Free School District
- Schools in district
- 5
- Rank in district
- #1 of 5
- District spending per student
- $33,390NCES F-33 · FY 2023 · This annual source is three years behind the current year.
- District child poverty rate
- 5.7%Census SAIPE · 2024
Islip High School is listed in ISLIP UNION FREE SCHOOL DISTRICT; a district label does not verify attendance for an address.
About Islip High School
Islip High School is a public high school in Islip, NY, part of Islip Union Free School District, serving approximately 891 students in grades 9th-12th with a 9.1:1 student-teacher ratio. It holds a MySchoolScout rating of 8.5 out of 10 and ranks #328 of 4,742 schools in NY. State assessment records show 93% math proficiency (multi-year average, 2009-2021) and 96% reading/ELA proficiency (multi-year average, 2009-2021).
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 ranks #328 of 4,742 schools in NY.
What is Islip High School's MySchoolScout rating?
Islip High School has a current MySchoolScout rating of 8.5 out of 10. This score combines the level-appropriate components shown in the rating breakdown; equity data is shown separately for context.
What are the test scores at Islip High School?
Based on loaded state assessment records, Islip High School has 93% math proficiency (multi-year average, 2009-2021) and 96% reading/ELA proficiency (multi-year average, 2009-2021).
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.
School factsNCES Common Core of Data (CCD) (SY 2023–24)
- Grades
- 9th – 12th
- Enrollment
- 891
- Student-Teacher Ratio
- 9.1:1
- Teachers (FTE)
- 98
- Type
- regular
- Setting
- Large Suburb
- County
- Suffolk County
- Chronic Absenteeism (SY 2022-23)
- 21.5%
- Phone
- (631) 650-8301
- 4-Year Graduation
- 97.0%
- Area population (ZIP 11751)
- 13,152
- Area average commute
- 29.6 min
- Area median age
- 46.6
Official sources & links
About this school's data
Every number on this page comes from a published source with a stated period. Where a source is partial, aging, or describes a surrounding area rather than the school, that limitation is named below.
- School directory (enrollment, grades, staff, contact)
- NCES Common Core of Data (CCD) · SY 2023–24 · Medium confidence
- Source period: SY 2023–24. A newer release may be available.
- MySchoolScout rating and rank
- MySchoolScout ranking model · Low confidence
- Vintage not available. Do not use this measure alone.
- Derived as a weighted blend of the component scores shown in Academics from state assessment, EdFacts growth, and NCES resource records.
- Math proficiency
- State department of education · 2021 EdFacts · Low confidence
- Older source: 2021 EdFacts. Use as historical context.
- Available for part of the eligible units; results may not represent the full area.
- Derived from source records rather than read directly from one field.
- Reading/ELA proficiency
- State department of education · 2021 EdFacts · Low confidence
- Older source: 2021 EdFacts. Use as historical context.
- Available for part of the eligible units; results may not represent the full area.
- Derived from source records rather than read directly from one field.
- Student progress (growth)
- NCES EdFacts · Mixed source periods · Low confidence
- Vintage not available. Do not use this measure alone.
- Available for part of the eligible units; results may not represent the full area.
- Derived as the fitted year-over-year slope of proficiency from multi-year assessment records.
- Neighborhood (income, housing, education)
- U.S. Census ACS 5-year estimates · ACS 2019–2023 5-year estimates · Low confidence
- Older source: ACS 2019–2023 5-year estimates. Use as historical context.
- Reported for the ZCTA for ZIP 11751; this does not measure the attendance area.
- Programs (AP/IB, athletics, gifted)
- CRDC via Urban Institute · SY 2021–22 · Medium confidence
- Available for part of the eligible units; results may not represent the full area.
- Source period: SY 2021–22. A newer release may be available.
Evidence periods: Rating mixed/unknown input periods; assessments multi-year average, 2009-2021; directory SY 2023–24
Related 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
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