Catherine Kolnaski Magnet School vs Thames River Magnet School
A head-to-head comparison of two elementary schools in Connecticut, United States, 1.0 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
Thames River Magnet School
Groton · Public elementary · Grades PK–5
501 students
| Measure | Catherine Kolnaski Magnet School Groton, Connecticut | Thames River Magnet School Groton, Connecticut |
|---|---|---|
| Success Index (US) | 53 Top 50% | 57 Top 50% |
| State rank | #393 of 596 | #364 of 596 |
| National rank | #23162 of 50,301 | #20484 of 50,301 |
| Sector | Public | Public |
| Type | Elementary | Elementary |
| Year range | Grades PK–5 | Grades PK–5 |
| Students | 375 | 501 |
| Enrollment | 375 | 501 |
| Free/reduced-price lunch | 80.3% | 74.3% |
| Students per teacher | 12.1 | 12.5 |
| Reading proficiency | 62% | 57% |
| Math proficiency | 42% | 52% |
| city | Groton | Groton |
| state | Connecticut | Connecticut |
| Website | – | – |
The verdict
- •Thames River Magnet School scores higher on the Success Index (US) (56.7 vs 52.8).
- •Thames River Magnet School does better on math proficiency (52% vs 42%).
- •Catherine Kolnaski Magnet School does better on reading proficiency (62% vs 57%).
- •Thames River Magnet School does better on community advantage (fewer free/reduced-price lunch) (74.3% vs 80.3%).
- •Catherine Kolnaski Magnet School does better on students per teacher (12.1 vs 12.5).
- •Thames River Magnet School is the larger school with 501 students compared with 375.
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 Thames River Magnet School?
On the Success Index (US), Thames River Magnet School ranks higher (56.7 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 Thames River Magnet School?
About 1.0 km in a straight line, between Groton and Groton in Connecticut.
Which has the better Enrollment?
Catherine Kolnaski Magnet School: 375. Thames River Magnet School: 501. Students enrolled in the latest NCES directory year.
How do Catherine Kolnaski Magnet School and Thames River Magnet School rank in Connecticut?
Catherine Kolnaski Magnet School is 393rd of 596 and Thames River Magnet School is 364th of 596 among elementary schools in Connecticut on the 2025 Success Index (US).