A−
Haddam-Killingworth Intermediate School
PublicElementaryGrades 4–5
451 Route 81, Killingworth, CT 06419 · (860) 663-1241 · Part of Regional School District 17
Students
280
Students per teacher
13:1
Free or reduced lunch
19%
Setting
Rural
Grades
4–5
What stands out about Haddam-Killingworth Intermediate School
- School Grade A−: near the top of Connecticut’s public schools
- Math proficiency 25 pts above the state
- Reading / language arts 16 pts above the state
- Enrollment up 11.6% since 2020
Test scores
EDFacts via Urban Institute Education Data Portal (SY2020-21) · 2020–21Math proficiency63%
State average 37.9%
Reading / language arts67%
State average 50.7%
Location
Directions ↗
451 Route 81, Killingworth
Students
Enrollment by grade
Grade 4133
Grade 5147
Enrollment over time
251’20
274’21
260’22
280’23
280’24
Up 11.6% since 2020.
Who goes here
White 89%Hispanic 5%Two or more races 4%Black 1%Asian <1%American Indian/Alaska Native <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 Intermediate 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.