Summary:
Zip code 06890, covering the Southport area of Fairfield, Connecticut, contains just one school: Mill Hill School, an elementary school serving grades K–5 with 371 students within the Fairfield School District.
As the only school in the zip code, Mill Hill automatically stands out locally, but it also shines statewide. It ranks 31st out of 491 Connecticut elementary schools for 2025–2026, placing it in the 94th percentile with a 5-star rating. The school's chronic absenteeism rate is remarkably low at 5.6%, far below the district's 8.0% and the state's 16.4%. With a student-teacher ratio of 11.3 and spending of $16,738 per student, Mill Hill is well-resourced and offers relatively small class sizes.
Academically, Mill Hill excels in science and math. Fifth-grade science proficiency hit 89.7%, nearly 37 points above the state average, and math proficiency in grades 3 and 5 exceeded 82%, with the 5th-grade math gap over the state reaching +37 points. English language arts is solid, though 3rd-grade ELA dipped to 62.7% in 2024–2025 before rebounding to 75.0% in 2025–2026. The school has also improved rapidly in state ranking, jumping from 77th in 2023–2024 to 31st in 2025–2026. Only 11.59% of students qualify for free or reduced lunch, indicating a relatively advantaged population. Since no middle or high schools exist within the zip code, families rely on other Fairfield School District schools for secondary education after Mill Hill's strong elementary foundation.
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