Summary:
Zip code 06013 is home to a single public high school, Lewis S. Mills High School, which serves grades 9 through 12 in Burlington, CT, as part of Regional School District 10.
Lewis S. Mills High School is a high-performing school with an enrollment of 614 students and a student-teacher ratio of 11.4 to 1. It stands out for its excellent 98.3% graduation rate, well above the state average of 91.2%, and its strong academic results. In ELA, 77% of 11th graders are proficient on the SAT, compared to 55.3% statewide; in math, 50% are proficient versus 31.3% statewide; and in science, 74.4% are proficient versus 50.5% statewide. The school has also improved its state ranking dramatically, moving from 31st out of 145 schools in 2023–2024 to 19th out of 133 in 2025–2026, now placing it in the 86th percentile. Math scores saw the biggest gain, jumping 9.1 percentage points to 50%, though math remains the subject with the most room for growth relative to ELA and science.
One area to note is chronic absenteeism, which sits at 11.8% — nearly double the district average of 6.0%, though still well below the state rate of 16.4%. The school also serves a relatively affluent population, with only 14.82% of students qualifying for free or reduced lunch, which is consistent with its high achievement and low poverty indicator. With only one high school in the zip code, comparisons are best made against the district and state. Overall, Lewis S. Mills High School is an academically strong, improving school with a top-tier graduation rate, making it a solid choice for families in the Burlington area.
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