Summary:
Zip code 06488 serves the community of Southbury, Connecticut, and is home to two public elementary schools — Pomperaug Elementary School and Gainfield Elementary School — both serving grades PK–5 within Regional School District 15.
Gainfield Elementary School is the clear standout in this area. In the most recent school year, it ranked 33rd out of 491 Connecticut elementary schools, placing it in the 93rd percentile with a 5-star rating. Its chronic absenteeism rate is just 3.1%, far below the district average of 9.0% and the state average of 16.4%. Gainfield outperformed the district and state in every reported subject and grade, with average ELA proficiency of 80.7% and math proficiency of 82.3% across grades 3–5. By contrast, Pomperaug Elementary School ranks 155th (68th percentile, 3 stars), with average ELA proficiency of 59.1% and math proficiency of 71.1%.
The two schools share similar demographics and low poverty rates, yet Pomperaug actually spends more per student ($20,272 vs. $18,838) and has a slightly lower student-teacher ratio (11.1 vs. 12.1). Despite these resource advantages, Pomperaug's test scores, attendance, and ranking are notably weaker. Both schools excel in science, posting nearly identical proficiency rates of 80.6% and 80.4% for Pomperaug and Gainfield respectively, well above the state average of 52.9%.
Perhaps the most striking finding is the divergence in performance trajectories. Just two years ago, Pomperaug ranked 105th and Gainfield 110th. Today, Gainfield has surged to 33rd while Pomperaug has slipped to 155th. Pomperaug also saw sharp declines in 4th grade scores, with ELA falling 7.6 points and math falling 5.2 points year over year. Gainfield, meanwhile, improved across every grade and subject, with 3rd grade ELA jumping 19 points. For parents, Gainfield is the strongest performer in the area, while Pomperaug remains a solid school that is losing ground to its district peer.
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