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Central Islip Union Free School District Schools
Central Islip Union Free School District is a public school district in New York, based in Suffolk County (Central Islip). SchoolGrade grades 8 of its schools on actual versus projected test scores; every school below has its own page.
Central Islip Union Free School District on the map
District boundary from the NCES EDGE composite school district file. Each marker is a graded school; click it for its grade and scores.
SchoolGrade summary for Central Islip Union Free School District
8 of 8 schools in Central Islip Union Free School District carry a SchoolGrade. Grade distribution:
A: 2B: 4C: 1D: 1
Best schools in Central Islip Union Free School District
Statewide rankings: all 769 high schools in New York · all 439 middle schools in New York · all 1408 elementary schools in New York
The ten highest SchoolGrades in the district. Grades reward actual test performance against the projection for each school's student context, so a B in a high-poverty school can outrank an A- elsewhere on impact.
- A+ Central Islip Senior High School (High school, meets expectations)
- A- Francis J Oneill School (Elementary school, greatly exceeds expectations)
- B Andrew T Morrow School (Elementary school, greatly exceeds expectations)
- B Cordello Avenue Elementary School (Elementary school, greatly exceeds expectations)
- B Marguerite L Mulvey School (Elementary school, greatly exceeds expectations)
- B- Anthony Alfano Elementary School (Elementary school, meets expectations)
- C Charles A Mulligan Elementary School (Elementary school, meets expectations)
- D- Ralph Reed School (Middle school, doesn't meet expectations)
Every school in Central Islip Union Free School District
All schools, A to Z (8)
- B Andrew T Morrow School, Islandia
- B- Anthony Alfano Elementary School, Central Islip
- A+ Central Islip Senior High School, Central Islip
- C Charles A Mulligan Elementary School, Central Islip
- B Cordello Avenue Elementary School, Central Islip
- A- Francis J Oneill School, Central Islip
- B Marguerite L Mulvey School, Central Islip
- D- Ralph Reed School, Central Islip
Where Central Islip Union Free School District schools are
Cities and towns served (2)
- Central Islip (7)
- Islandia (1)
About this district
- State: Best schools in New York
- County: Suffolk County
- Type: regular local school district
- Setting: large suburb (NCES locale of the district office)
- Enrollment: 7,867 students with 534 full-time-equivalent teachers and 1,432 total staff FTE (NCES CCD, 2023-24)
- NCES district ID: 3606870
- Grades are the 2025-26 SchoolGrade model: each school's actual proficiency against the level projected for its student context. How SchoolGrade works
Nearby school districts
- Hauppauge Union Free School District (5 schools, 3 mi)
- Connetquot Central School District (10 schools, 3 mi)
- Brentwood Union Free School District (17 schools, 4 mi)
- East Islip Union Free School District (6 schools, 5 mi)
- Islip Union Free School District (5 schools, 6 mi)
- Commack Union Free School District (8 schools, 6 mi)
- Bay Shore Union Free School District (7 schools, 6 mi)
- Sayville Union Free School District (5 schools, 7 mi)
Questions about Central Islip Union Free School District
How many schools are in Central Islip Union Free School District?
SchoolGrade grades 8 public schools in Central Islip Union Free School District, across 2 cities and towns. Every one of them is listed on this page with a link to its own report.
Which cities does Central Islip Union Free School District serve?
The largest by graded schools: Central Islip, Islandia.
How good are the schools in Central Islip Union Free School District?
Across the 8 graded schools, the average SchoolGrade is B-, with 46.3% of tested students meeting the state bar against a projected 41.3%. 88% of schools meet or exceed the expectation for their student context.
How many students attend Central Islip Union Free School District?
7,867 students were enrolled in Central Islip Union Free School District in the 2023-24 school year, about 14.7 students per full-time teacher (NCES Common Core of Data).
Where is Central Islip Union Free School District?
Central Islip Union Free School District is in New York, based in Suffolk County, with its district office in Central Islip. Its boundary covers about 8.2 sq mi.