Best Schools in Central Islip, New York
7 schools · 5 Elementary · 1 Middle · 1 High
Choosing a school in Central Islip?
Use this page to compare every school in Central Islip by level, neighborhood, and district — and find the right fit, not just the top of the list.
Shortlist starter
Start with these real page-level signals, then use the full table and map below.
Cordello Avenue Elementary School
Elementary · Central Islip Union Free School District. Ranked from real test data; compare it on the map and table below.
Charles a Mulligan Elementary School
Elementary · Central Islip Union Free School District. Ranked from real test data; compare it on the map and table below.
Francis J O'neill School
Elementary · Central Islip Union Free School District. Ranked from real test data; compare it on the map and table below.
The short answer
The top-rated schools in Central Islip for 2026 are Cordello Avenue Elementary School (7.2/10), Charles a Mulligan Elementary School (6.0/10), and Francis J O'neill School (5.5/10), based on MySchoolScout's analysis of real test data across 7 rated schools. Ratings blend student growth, poverty-adjusted academic achievement, and school environment (plus college readiness for high schools), with equity shown as context, not scored; schools with estimated (proxy) scores are excluded from this ranking.
Schools
7
in this city
Avg Score
5.0
out of 10
Median Home
$407,100
home value · ACS
District
1
serving the city
Schools
7
in this city
Avg Score
5.0
out of 10
Median Home
$407,100
home value · ACS
District
1
serving the city
STAAR proficiency rose +10.8 points from 2022 to 2024. That's the biggest jump among Central Islip schools across the two most recent comparable testing years.
Top-Rated Schools in Central Islip
Ranked by MySchoolScout composite using only schools with real test data (7 rated schools; 7 schools in the directory). "Value" = points above what student poverty predicts. Estimated (proxy) scores are excluded.
| # | School | Rating |
|---|---|---|
| 1 | Cordello Avenue Elementary School | 7.2 / 10 |
| 2 | Charles a Mulligan Elementary School | 6.0 / 10 |
| 3 | Francis J O'neill School | 5.5 / 10 |
| 4 | Central Islip Senior High School | 5.4 / 10 |
| 5 | Marguerite L Mulvey School | 4.0 / 10 |
| 6 | Ralph Reed School | 3.6 / 10 |
| 7 | Anthony Alfano Elementary School | 3.5 / 10 |
See every school — including those with estimated data — in the full directory below. How we rate schools.
Family Snapshot
At a glance- Avg school rating
- 5.0/10
- Median household income
- $110,365
- Median home value
- $407,100
- Bachelor's degree or higher
- 18%
- Avg commute
- 28 min
- Owner-occupied homes
- 77%
14% of schools rated 7+
Census ACS, ZIPs in this city
Owner-occupied units
Adults 25+
Workers age 16+
Of occupied housing units
How Central Islip compares
New York rank
#458 of 473
cities by avg. school score
Vs. state average
-1.3
below New York avg (6.4)
Median household income
$110k
118% of New York median
Schools in this city
7
Central Islip Union Free School District runs Central Islip's public schools
7 public schools. Central Islip Union Free School District is the only district on the page.
Every assigned public school in Central Islip is a Central Islip Union Free School District school (7 of 7).
Among 7 public schools with real test data, composite scores run from 3.5 to 7.2 — the spread is inside Central Islip, not a citywide average.
About Schools in Central Islip, New York
Central Islip, New York is home to 7 schools, including 7 public schools. The city's schools span 5 elementary schools, 1 middle school, and 1 high school.
With an average rating of 5.0 out of 10, schools in Central Islip show moderate performance on the MySchoolScout composite scale. The composite blends student growth, poverty-adjusted academic achievement, and school environment — plus college readiness for high schools.
The highest-performing school in Central Islip is Cordello Avenue Elementary School with a composite score of 7.2/10, demonstrating strong academic outcomes and school quality metrics.
Central Islip is served by 1 school district: CENTRAL ISLIP UNION FREE SCHOOL DISTRICT. These districts collectively serve 7,867 students.
Central Islip's community shows 18% bachelor's degree attainment with a median household income of $110,365. The poverty rate in the area is 9.3%.
Browse the schools below to compare ratings, test scores, enrollment, and other key metrics. Use the filters to focus on specific school levels or types that match your family's needs.
Elementary Schools
5 schools| # | School | Rating |
|---|---|---|
| 1 | 534 students · Kindergarten–6th | 7.2 |
| 2 | 963 students · Kindergarten–6th | 6.0 |
| 3 | 592 students · Kindergarten–6th | 5.5 |
| 4 | 532 students · Kindergarten–6th | 4.0 |
| 5 | 497 students · Pre-K–6th | 3.5 |
Middle Schools
1 school| # | School | Rating |
|---|---|---|
| 1 | 1,168 students · 7th–8th | 3.6 |
High Schools
1 school| # | School | Rating |
|---|---|---|
| 1 | 2,597 students · 9th–12th | 5.4 |
Schools in Central Islip
Central Islip, New York · 7 schools
Community Demographics
Census ACS 2022 5-Year Estimates across 1 ZIP code
Median Income
$110,365
Median Home Value
$407,100
Median Rent
$2,094/mo
Population
38,443
College Educated
18%
Homeownership
77%
Avg Commute
28 min
Poverty Rate
9.3%
Community Profile
Central Islip has a median household income of $110,365. It is a community where 18% of adults hold a bachelor's degree or higher. The median home value in the area is $407,100, with a median rent of $2,094/month. The local poverty rate of 9.3% is relatively low. The average commute for residents is 28 minutes. Source: U.S. Census ACS 2022 5-Year Estimates.
Schools by Level
- State
- New York
- Elementary
- 5
- Middle
- 1
- High
- 1
Resources
Other Major Cities in New York
Top metros statewide by school count.
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 rateFrequently Asked Questions
Common questions about schools in Central Islip, New York
How many schools are in Central Islip, New York?
Central Islip has 7 schools, including 7 public and 0 private schools spanning elementary, middle, and high school levels.
What is the average school rating in Central Islip, New York?
The average MySchoolScout composite score for schools in Central Islip is 5.0 out of 10, built from student growth, poverty-adjusted academic achievement, and school environment — plus college readiness for high schools.
What is the top-ranked school in Central Islip, New York?
The top-ranked school in Central Islip on MySchoolScout is Cordello Avenue Elementary School with a composite score of 7.2/10.
What is the best elementary school in Central Islip, New York?
The top-ranked elementary school in Central Islip on MySchoolScout is Cordello Avenue Elementary School with a composite score of 7.2/10.
What is the best middle school in Central Islip, New York?
The top-ranked middle school in Central Islip on MySchoolScout is Ralph Reed School with a composite score of 3.6/10.
What is the best high school in Central Islip, New York?
The top-ranked high school in Central Islip on MySchoolScout is Central Islip Senior High School with a composite score of 5.4/10.
How many school districts serve Central Islip, New York?
Central Islip is served by 1 school district: Central Islip Union Free School District.
What is the education level in Central Islip, New York?
According to Census data, 18% of adults in Central Islip have earned a bachelor's degree or higher.
What is the median income in Central Islip, New York?
The median household income in Central Islip is approximately $110,365 according to Census ACS 2022 estimates.
What is the student-teacher ratio in Central Islip, New York?
The average student-teacher ratio across schools in Central Islip is 13.9:1. This ratio varies by school, so families should check individual school profiles for specific classroom sizes.
How does MySchoolScout rate schools in Central Islip, New York?
MySchoolScout rates schools using publicly available data from the NCES Common Core of Data and state education departments. Each school receives a 1-10 composite score built from Student Growth, Poverty-Adjusted Academic Achievement, and School Environment — plus College Readiness for high schools. Weights vary by school level, and equity data is shown for context but not scored.
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- Student-Teacher Ratio by State: Complete 2026 Rankingsdata insights
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Data from NCES Common Core of Data, New York State Education Dept., and U.S. Census ACS for the 2023–24 school year. Rankings computed by MySchoolScout. See all data sources.