Summary:
The Avon School District, ranked 19th out of 153 districts in Connecticut (88th percentile, 4 stars), includes two middle-level schools—Thompson Brook School (grades 5–6, enrollment 497) and Avon Middle School (grades 7–8, enrollment 461)—that together form a cohesive, high-performing pathway through the middle grades.
Avon Middle School is a consistent state leader, earning a 5-star rating with a 93rd-percentile rank (18th out of 258 schools) for the 2025–2026 school year, and similarly strong rankings in the prior two years. Thompson Brook School, while not individually ranked, posts exceptional test scores, especially in 6th grade, where 83% of students meet ELA proficiency and 79.7% meet math proficiency—roughly 30–35 points above state averages. Thompson Brook also has an impressively low chronic absenteeism rate of 6.4%, compared to 11.0% at Avon Middle and the state average of 16.4%. Both schools serve relatively economically advantaged populations, with free/reduced lunch eligibility at 11.1% and 13.2%, respectively.
One notable pattern is the strong score jump between 5th and 6th grade at Thompson Brook: math proficiency rises from 66.4% to 79.7%, and ELA from 75.3% to 83.0%. At Avon Middle, 7th grade math proficiency improved sharply from 64.5% to 73.9% year over year, while 8th grade science slipped from 77.2% to 72.6%. Interestingly, Avon Middle has a lower student-teacher ratio (10.7 vs. 14.4) and slightly higher per-student spending than Thompson Brook, yet its chronic absenteeism is nearly double—suggesting older students may face different attendance challenges regardless of resources. Overall, families in the Avon School District can expect a consistently excellent middle school experience, with both schools outperforming state averages in every subject and grade level tested by 20–30 percentage points.
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