A−
Haddam-Killingworth Middle School
PublicMiddleGrades 6–8
451 Route 81, Killingworth, CT 06419 · (860) 663-1241 · Part of Regional School District 17
Students
423
Students per teacher
11:1
Free or reduced lunch
16%
Setting
Rural
Grades
6–8
What stands out about Haddam-Killingworth Middle School
- School Grade A−: near the top of Connecticut’s public schools
- Math proficiency 11 pts above the state
- Reading / language arts 23 pts above the state
- Small classes: 11:1 students per teacher
Test scores
EDFacts via Urban Institute Education Data Portal (SY2020-21) · 2020–21Math proficiency49%
State average 37.9%
Reading / language arts74%
State average 50.7%
Location
Directions ↗
451 Route 81, Killingworth
Students
Enrollment by grade
Grade 6136
Grade 7132
Grade 8155
Enrollment over time
433’20
396’21
399’22
395’23
423’24
About steady.
Who goes here
White 89%Hispanic 5%Two or more races 3%Black 2%Asian 1%
As reported to NCES, share of students with a reported race or ethnicity.
What neighbors say
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Parents talk
Conversations in Town Square that mention Haddam-Killingworth Middle School.
Other schools in Regional School District 17
School facts: U.S. Department of Education (NCES), 2024-2025 school year. Scores: EDFacts via Urban Institute Education Data Portal (SY2020-21). The School Grade is our own summary of state test results. Neighbor ratings are opinions, not an official measure of school quality.