Nassakeag Elementary School vs William Sidney Mount Elementary School
A head-to-head comparison of two elementary schools in New York, United States, 3.2 km apart, using official American 2025 data. The better value in each row is highlighted.
Nassakeag Elementary School
East Setauket · Public elementary · Grades PK–6
551 students
William Sidney Mount Elementary School
Stony Brook · Public elementary · Grades PK–6
525 students
| Measure | Nassakeag Elementary School East Setauket, New York | William Sidney Mount Elementary School Stony Brook, New York |
|---|---|---|
| Success Index (US) | 95 Top 5% | 84 Top 10% |
| State rank | #25 of 2,536 | #251 of 2,536 |
| National rank | #141 of 50,301 | #2924 of 50,301 |
| Sector | Public | Public |
| Type | Elementary | Elementary |
| Year range | Grades PK–6 | Grades PK–6 |
| Students | 551 | 525 |
| Enrollment | 551 | 525 |
| Free/reduced-price lunch | 8.5% | 20.4% |
| Students per teacher | 12.8 | 13.1 |
| Reading proficiency | 87% | 67% |
| Math proficiency | 92% | 77% |
| city | East Setauket | Stony Brook |
| state | New York | New York |
| Website | – | – |
The verdict
- •Nassakeag Elementary School scores higher on the Success Index (US) (94.5 vs 84.0).
- •Nassakeag Elementary School does better on math proficiency (92% vs 77%).
- •Nassakeag Elementary School does better on reading proficiency (87% vs 67%).
- •Nassakeag Elementary School does better on community advantage (fewer free/reduced-price lunch) (8.5% vs 20.4%).
- •Nassakeag Elementary School does better on students per teacher (12.8 vs 13.1).
- •Nassakeag Elementary School is the larger school with 551 students compared with 525.
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 Nassakeag Elementary School better than William Sidney Mount Elementary School?
On the Success Index (US), Nassakeag Elementary School ranks higher (94.5 vs 84.0 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 Nassakeag Elementary School and William Sidney Mount Elementary School?
About 3.2 km in a straight line, between East Setauket and Stony Brook in New York.
Which has the better Enrollment?
Nassakeag Elementary School: 551. William Sidney Mount Elementary School: 525. Students enrolled in the latest NCES directory year.
How do Nassakeag Elementary School and William Sidney Mount Elementary School rank in New York?
Nassakeag Elementary School is 25th of 2,536 and William Sidney Mount Elementary School is 251st of 2,536 among elementary schools in New York on the 2025 Success Index (US).