Haddam-Killingworth High School
95 Little City Road, Higganum, CT 06441 · (860) 345-8541 · Part of Regional School District 17
Haddam’s School Grade A− better than 78% of Connecticut school districts
What stands out about Haddam-Killingworth High School
- Its own letter, A−: reading and math results near the top of Connecticut’s public schools
- Math proficiency 14 pts above the state
- Reading / language arts 31 pts above the state
- Small classes: 10 students per teacher
- Enrollment down 24.2% since 2020–21
On the path
Where Haddam kids come from and go next. The whole path →
Test scores
2020–21Its own letter, A−, places these results among Connecticut’s 920 public schools with results. Source: EDFacts via Urban Institute Education Data Portal (SY2020-21).
Location
Directions ↗95 Little City Road, Higganum
Students
Down 24.2% since 2020–21.
As reported to NCES, share of students with a reported race or ethnicity.
Parents talk
Questions and answers about Haddam-Killingworth High School from Haddam families.
Other schools in Regional School District 17
School facts: U.S. Department of Education (NCES), 2024–2025 school year. Test scores: EDFacts via Urban Institute Education Data Portal (SY2020-21). A school’s letter is our own summary of its reading and math results against Connecticut’s other public schools; Haddam’s School Grade is built from its districts’ results. Map: © OpenStreetMap contributors.