Killingly High School
🇺🇸 Official data · 2025Dayville, Connecticut 06241 · Killingly School District
#104 of 180 high schools in Connecticut
#7039 of 16,910 nationally
About Killingly High School
Killingly High School is a public high located in Dayville, in the Killingly School District school district of Connecticut, United States. It caters for Grades 9–12. In 2025 it enrolled 744 students. Traditional public schools run by a school district; free to attend.
Its Success Index (US) is 55.0 out of 100, placing it in the top 50% of high schools in United States and 104th of 180 ranked high schools in Connecticut. Its strongest component is students per teacher (79th percentile), and its weakest is math proficiency (30th percentile).
Other published figures: enrollment 744.
There are 3 schools in Dayville; Killingly High School ranks 3rd of 3 scored schools there.
Success Index (US) breakdown
Each component is a percentile against high schools across United States.
- Math proficiency (30%)27%
- Reading proficiency (30%)62%
- Community advantage (fewer free/reduced-price lunch) (25%)42.9%
- Students per teacher (15%)11.3
The Success Index (US) summarises published data about a school community. It is not a measure of teaching quality. Read the methodology.
Published measures
All figures published for Killingly High School by the official sources.
- Enrollment
- 744
- Students enrolled in the latest NCES directory year.
- Free/reduced-price lunch
- 42.9%
- Share of students eligible for free or reduced-price lunch.
- Students per teacher
- 11.3
- Enrollment divided by FTE teachers; not class size.
- Reading proficiency
- 62%
- Share of tested students proficient or above (all students, all grades).
- Math proficiency
- 27%
- Share of tested students proficient or above (all students, all grades).
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Schools near Killingly High School
Closest schools by straight-line distance, with their Success Index (US).
Killingly Central School
Dayville · Public elementary · Grades PK–2
317 students · 1.5 km away
Killingly Intermediate School
Dayville · Public middle · Grades 5–8
692 students · 2.2 km away
Quinebaug Middle College
Danielson · Public high · Grades 9–12
144 students · 4.0 km away
Killingly Memorial School
Danielson · Public elementary · Grades 2–4
485 students · 5.5 km away
Pomfret Community School
Pomfret Center · Public elementary · Grades PK–8
332 students · 7.2 km away
Putnam High School
Putnam · Public high · Grades 9–12
253 students · 7.8 km away
Putnam Elementary School
Putnam · Public elementary · Grades PK–4
558 students · 8.3 km away
Putnam Middle School
Putnam · Public middle · Grades 5–8
353 students · 8.4 km away
West Glocester Elementary
Chepachet · Public elementary · Grades PK–5
243 students · 9.8 km away
Brooklyn Middle School
Brooklyn · Public middle · Grades 5–8
373 students · 9.8 km away
Similar schools
Public high schools in Connecticut with a comparable Enrollment.
Connecticut River Academy at Goodwin University
East Hartford · Public high · Grades 6–12
742 students
Branford High School
Branford · Public high · Grades 9–12
738 students
Rocky Hill High School
Rocky Hill · Public high · Grades 9–12
738 students
Daniel Hand High School
Madison · Public high · Grades 9–12
751 students
Ledyard High School
Ledyard · Public high · Grades 9–12
731 students
Joseph A. Foran High School
Milford · Public high · Grades 9–12
727 students
Frequently asked questions
Is Killingly High School a good school?
Killingly High School has a Success Index (US) of 55.0 out of 100 (Top 50% of high schools in United States) and ranks #104 of 180 in Connecticut. The index summarises published data about the school community and, where available, attainment; it does not measure teaching quality, so visit the school and ask about support at your child's level.
Where does Killingly High School rank in Connecticut?
Killingly High School ranks #104 of 180 high schools in Connecticut and #7039 of 16,910 nationally on the Success Index (US) (2025 data).
How many students attend Killingly High School?
Killingly High School had 744 students in 2025.
Is Killingly High School a elementary school or a high school?
Killingly High School is classified as a high covering Grades 9–12. It is a public school.
What other schools are near Killingly High School?
There are 10 schools within 15 km of Killingly High School; they are listed on this page with their Success Index (US) and distance, and can be compared side by side.