Charles A Mulligan Elementary School vs Francis J O'neill School
A head-to-head comparison of two elementary schools in New York, United States, 644 m apart, using official American 2025 data. The better value in each row is highlighted.
Charles A Mulligan Elementary School
Central Islip · Public elementary · Grades K–6
997 students
Francis J O'neill School
Central Islip · Public elementary · Grades K–6
600 students
| Measure | Charles A Mulligan Elementary School Central Islip, New York | Francis J O'neill School Central Islip, New York |
|---|---|---|
| Success Index (US) | 27 Lower 50% | 34 Lower 50% |
| State rank | #2146 of 2,536 | #1940 of 2,536 |
| National rank | #40443 of 50,301 | #36246 of 50,301 |
| Sector | Public | Public |
| Type | Elementary | Elementary |
| Year range | Grades K–6 | Grades K–6 |
| Students | 997 | 600 |
| Enrollment | 997 | 600 |
| Free/reduced-price lunch | 71.4% | 75.2% |
| Students per teacher | 14.9 | 14.0 |
| Reading proficiency | 27% | 31% |
| Math proficiency | 30% | 40% |
| city | Central Islip | Central Islip |
| state | New York | New York |
| Website | – | – |
The verdict
- •Francis J O'neill School scores higher on the Success Index (US) (33.5 vs 26.9).
- •Francis J O'neill School does better on math proficiency (40% vs 30%).
- •Francis J O'neill School does better on reading proficiency (31% vs 27%).
- •Charles A Mulligan Elementary School does better on community advantage (fewer free/reduced-price lunch) (71.4% vs 75.2%).
- •Francis J O'neill School does better on students per teacher (14.0 vs 14.9).
- •Charles A Mulligan Elementary School is the larger school with 997 students compared with 600.
The Success Index (US) summarises published results and context from official data. It does not measure teaching quality or fit. Methodology.
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Frequently asked questions
Is Charles A Mulligan Elementary School better than Francis J O'neill School?
On the Success Index (US), Francis J O'neill School ranks higher (33.5 vs 26.9 out of 100). The index is built from published results and context data, not from teaching quality or fit, so visit both schools before deciding.
How far apart are Charles A Mulligan Elementary School and Francis J O'neill School?
About 644 m in a straight line, between Central Islip and Central Islip in New York.
Which has the better Enrollment?
Charles A Mulligan Elementary School: 997. Francis J O'neill School: 600. Students enrolled in the latest NCES directory year.
How do Charles A Mulligan Elementary School and Francis J O'neill School rank in New York?
Charles A Mulligan Elementary School is 2146th of 2,536 and Francis J O'neill School is 1940th of 2,536 among elementary schools in New York on the 2025 Success Index (US).