Summary:
ZIP code 03576 is a small Colebrook community with two schools at the same campus: Colebrook Academy and Elementary School (E), serving prekindergarten through 8th grade, and Colebrook Academy and Elementary School (H), serving grades 9–12. Together, they enroll about 288 students and are part of the Colebrook School District.
For families comparing the two campuses, the high school has the stronger recent overall profile. Its ranking rose from the 24th percentile in 2022–2023 to the 73rd percentile in 2024–2025. It also reported a 92.3% graduation rate, above the 87% statewide rate, and a 0% dropout rate. In 2024–2025, high school students performed especially well in science, with 74% proficient compared with 38% statewide, while reading proficiency was 59%, slightly above the state. The elementary/middle-grade campus has a lower recent ranking, but reading is a notable strength: its 2025–2026 overall reading proficiency was 55%, matching the state, with particularly strong results in grades 5 and 6.
The clearest area needing attention is mathematics. Elementary/middle-grade math proficiency was 22% overall, compared with 44% statewide, and results were especially low in grades 5 and 7. Science was also below state levels on that campus. High school math trailed the state as well, at 33% proficiency compared with 42%. Parents should also note that high school reading fell to 37% in the available 2025–2026 result after being 59% the prior year; small class sizes can make year-to-year percentages fluctuate considerably. Both campuses have low reported student-teacher ratios, about 9.1 to 1 in the younger grades and 8.3 to 1 in high school, which may support individualized attention.
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