Summary:
Zip code 06237 in Columbia, CT contains one school, Horace W. Porter School, an elementary school serving grades PK through 8 with 440 students in the Columbia School District. This single-school district means the analysis focuses entirely on this one institution, which offers a full preschool through middle school experience in a single building.
The school stands out for strong early elementary performance, with 3rd graders exceeding state averages by 15 points in English Language Arts and 19.5 points in mathematics. Science achievement is also notable, with 69% of 5th graders proficient compared to 52.9% statewide. The school has a very low student-teacher ratio of 9.8, and chronic absenteeism is just 7.5%, less than half the state rate of 16.4%. About 22% of students participate in free/reduced lunch, and per-student spending is $21,347.
Performance is uneven across grades and subjects. While 3rd grade and 7th grade math show strong results, 4th grade ELA lags the state by 4.7 points, and 5th and 8th grade math are slightly below state averages. Year-over-year improvements are visible in several areas, including 3rd grade ELA rising from 50% to 62.3% and 7th grade math jumping from 48.2% to 60.4%. The school's ranking improved from the 48th percentile in 2024-2025 to the 55th percentile in 2025-2026, earning 3 stars, while the district holds a 40th percentile ranking with 2 stars. Overall, this well-resourced school with small classes and strong attendance offers a competitive education, with upper-grade math and 4th grade reading as areas to watch.
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