Coginchaug Regional High School vs Haddam-Killingworth High School
A head-to-head comparison of two high schools in Connecticut, United States, 9.0 km apart, using official American 2025 data. The better value in each row is highlighted.
Coginchaug Regional High School
Durham · Public high · Grades 9–12
356 students
Haddam-Killingworth High School
Higganum · Public high · Grades 9–12
466 students
| Measure | Coginchaug Regional High School Durham, Connecticut | Haddam-Killingworth High School Higganum, Connecticut |
|---|---|---|
| Success Index (US) | 84 Top 5% | 86 Top 5% |
| State rank | #30 of 180 | #25 of 180 |
| National rank | #764 of 16,910 | #597 of 16,910 |
| Sector | Public | Public |
| Type | High | High |
| Year range | Grades 9–12 | Grades 9–12 |
| Students | 356 | 466 |
| Enrollment | 356 | 466 |
| Free/reduced-price lunch | 15.7% | 13.7% |
| Students per teacher | 8.9 | 9.7 |
| Reading proficiency | 82% | 82% |
| Math proficiency | 52% | 57% |
| city | Durham | Higganum |
| state | Connecticut | Connecticut |
| Website | – | – |
The verdict
- •Haddam-Killingworth High School scores higher on the Success Index (US) (85.5 vs 83.9).
- •Haddam-Killingworth High School does better on math proficiency (57% vs 52%).
- •Haddam-Killingworth High School does better on community advantage (fewer free/reduced-price lunch) (13.7% vs 15.7%).
- •Coginchaug Regional High School does better on students per teacher (8.9 vs 9.7).
- •Haddam-Killingworth High School is the larger school with 466 students compared with 356.
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 Coginchaug Regional High School better than Haddam-Killingworth High School?
On the Success Index (US), Haddam-Killingworth High School ranks higher (85.5 vs 83.9 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 Coginchaug Regional High School and Haddam-Killingworth High School?
About 9.0 km in a straight line, between Durham and Higganum in Connecticut.
Which has the better Enrollment?
Coginchaug Regional High School: 356. Haddam-Killingworth High School: 466. Students enrolled in the latest NCES directory year.
How do Coginchaug Regional High School and Haddam-Killingworth High School rank in Connecticut?
Coginchaug Regional High School is 30th of 180 and Haddam-Killingworth High School is 25th of 180 among high schools in Connecticut on the 2025 Success Index (US).