Catherine Kolnaski Magnet School vs Marine Science Magnet High School
A head-to-head comparison of two schools in Connecticut, United States, 1.4 km apart, using official American 2025 data. The better value in each row is highlighted.
Catherine Kolnaski Magnet School
Groton · Public elementary · Grades PK–5
375 students
Marine Science Magnet High School
Groton · Public high · Grades 9–12
274 students
| Measure | Catherine Kolnaski Magnet School Groton, Connecticut | Marine Science Magnet High School Groton, Connecticut |
|---|---|---|
| Success Index (US) | 53 Top 50% | 84 Top 5% |
| State rank | #393 of 596 | #31 of 180 |
| National rank | #23162 of 50,301 | #769 of 16,910 |
| Sector | Public | Public |
| Type | Elementary | High |
| Year range | Grades PK–5 | Grades 9–12 |
| Students | 375 | 274 |
| Enrollment | 375 | 274 |
| Free/reduced-price lunch | 80.3% | 30.7% |
| Students per teacher | 12.1 | 10.5 |
| Reading proficiency | 62% | 92% |
| Math proficiency | 42% | 62% |
| city | Groton | Groton |
| state | Connecticut | Connecticut |
| Website | – | – |
The verdict
- •Marine Science Magnet High School scores higher on the Success Index (US) (83.9 vs 52.8).
- •Marine Science Magnet High School does better on math proficiency (62% vs 42%).
- •Marine Science Magnet High School does better on reading proficiency (92% vs 62%).
- •Marine Science Magnet High School does better on community advantage (fewer free/reduced-price lunch) (30.7% vs 80.3%).
- •Marine Science Magnet High School does better on students per teacher (10.5 vs 12.1).
- •Catherine Kolnaski Magnet School is the larger school with 375 students compared with 274.
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 Catherine Kolnaski Magnet School better than Marine Science Magnet High School?
On the Success Index (US), Marine Science Magnet High School ranks higher (83.9 vs 52.8 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 Catherine Kolnaski Magnet School and Marine Science Magnet High School?
About 1.4 km in a straight line, between Groton and Groton in Connecticut.
Which has the better Enrollment?
Catherine Kolnaski Magnet School: 375. Marine Science Magnet High School: 274. Students enrolled in the latest NCES directory year.
How do Catherine Kolnaski Magnet School and Marine Science Magnet High School rank in Connecticut?
Catherine Kolnaski Magnet School is 393rd of 596 and Marine Science Magnet High School is 31st of 180 among elementary schools in Connecticut on the 2025 Success Index (US).