Cos Cob School vs Julian Curtiss School
A head-to-head comparison of two elementary schools in Connecticut, United States, 2.0 km apart, using official American 2025 data. The better value in each row is highlighted.
Cos Cob School
Cos Cob · Public elementary · Grades PK–5
343 students
Julian Curtiss School
Greenwich · Public elementary · Grades PK–5
236 students
| Measure | Cos Cob School Cos Cob, Connecticut | Julian Curtiss School Greenwich, Connecticut |
|---|---|---|
| Success Index (US) | 89 Top 5% | 73 Top 25% |
| State rank | #74 of 596 | #257 of 596 |
| National rank | #908 of 50,301 | #9313 of 50,301 |
| Sector | Public | Public |
| Type | Elementary | Elementary |
| Year range | Grades PK–5 | Grades PK–5 |
| Students | 343 | 236 |
| Enrollment | 343 | 236 |
| Free/reduced-price lunch | 16% | 39% |
| Students per teacher | 10.1 | 8.4 |
| Reading proficiency | 72% | 62% |
| Math proficiency | 74% | 57% |
| city | Cos Cob | Greenwich |
| state | Connecticut | Connecticut |
| Website | – | – |
The verdict
- •Cos Cob School scores higher on the Success Index (US) (89.4 vs 72.9).
- •Cos Cob School does better on math proficiency (74% vs 57%).
- •Cos Cob School does better on reading proficiency (72% vs 62%).
- •Cos Cob School does better on community advantage (fewer free/reduced-price lunch) (16% vs 39%).
- •Julian Curtiss School does better on students per teacher (8.4 vs 10.1).
- •Cos Cob School is the larger school with 343 students compared with 236.
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 Cos Cob School better than Julian Curtiss School?
On the Success Index (US), Cos Cob School ranks higher (89.4 vs 72.9 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 Cos Cob School and Julian Curtiss School?
About 2.0 km in a straight line, between Cos Cob and Greenwich in Connecticut.
Which has the better Enrollment?
Cos Cob School: 343. Julian Curtiss School: 236. Students enrolled in the latest NCES directory year.
How do Cos Cob School and Julian Curtiss School rank in Connecticut?
Cos Cob School is 74th of 596 and Julian Curtiss School is 257th of 596 among elementary schools in Connecticut on the 2025 Success Index (US).