Killingly High School is a public high school in Killingly, Connecticut. The school reported 792 students and 65 FTE classroom teachers for the 2014–2015 school year. Killingly High is the only public high school in the Killingly School District, which is on the eastern edge of Windham County.
Serving 744 students in grades 9-12, Killingly High School ranks in the bottom 50% of all schools in Connecticut for overall test scores (math proficiency is bottom 50%, and reading proficiency is bottom 50%).
The percentage of students achieving proficiency in math is 25-29% (which is lower than the Connecticut state average of 41%). The percentage of students achieving proficiency in reading/language arts is 55-59% (which is higher than the Connecticut state average of 50%).
The student-teacher ratio of 11:1 is lower than the Connecticut state level of 12:1.
Minority enrollment is 23% of the student body (majority Hispanic), which is lower than the Connecticut state average of 54% (majority Hispanic).
Quick Facts (2026)
- Grades: 9-12
- Enrollment: 744 students
- Student-Teacher Ratio: 11:1
- Minority Enrollment: 23%
- Graduation Rate: 80-84% (Btm 50% in CT)
- Overall Testing Rank: Bottom 50%
- Math Proficiency: 25-29% (Btm 50%)
- Reading Proficiency: 55-59% (Top 50%)
- Science Proficiency: 35-39% (Btm 50%)
- Source: National Center for Education Statistics (NCES), CT Dept. of Education
Top Rankings
Killingly High School ranks among the top 20% of public schools in Connecticut for:
Category
Attribute
Most improved public schools
School Overview
Killingly High School's student population of 744 students has stayed relatively flat over five school years.
The teacher population of 67 teachers has stayed relatively flat over five school years.
Grades Offered
Grades 9-12
(Supplemental Virtual)
(Supplemental Virtual)
Total Students
744 students
Total Classroom Teachers
67 teachers
Year Founded
1908
School Motto
Great Things Happen Here!
School Rankings
Killingly High School ranks within the bottom 50% of all 939 schools in Connecticut (based off of combined math and reading proficiency testing data).
The diversity score of Killingly High School is 0.39, which is less than the diversity score at state average of 0.68. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#527 out of 939 schools
(Bottom 50%)
(Bottom 50%)
Math Test Scores (% Proficient)
25-29%
41%
Reading/Language Arts Test Scores (% Proficient)
55-59%
50%
Science Test Scores (% Proficient)
35-39%
47%
Student-Teacher Ratio
11:1
12:1
American Indian
n/a
n/a
Asian
2%
5%
Hispanic
13%
32%
Black
3%
12%
White
77%
46%
Hawaiian
n/a
n/a
Two or more races
5%
5%
All Ethnic Groups
Graduation Rate
80-84%
89%
Eligible for Free Lunch
34%
38%
Eligible for Reduced Lunch
8%
6%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), CT Dept. of Education
School Notes
- School Mascot: None (formerly Redmen)
Frequently Asked Questions
What is Killingly High School's ranking?
Killingly High School is ranked #527 out of 939 schools, which ranks it among the bottom 50% of public schools in Connecticut.
What schools are Killingly High School often compared to?
Killingly High Schoolis often viewed alongside schools like Plainfield High School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
25-29% of students have achieved math proficiency (compared to the 41% CT state average), while 55-59% of students have achieved reading proficiency (compared to the 50% CT state average).
What is the graduation rate of Killingly High School?
The graduation rate of Killingly High School is 80-84%, which is lower than the Connecticut state average of 89%.
How many students attend Killingly High School?
744 students attend Killingly High School.
What is the racial composition of the student body?
77% of Killingly High School students are White, 13% of students are Hispanic, 5% of students are Two or more races, 3% of students are Black, and 2% of students are Asian.
What is the student-teacher ratio of Killingly High School?
Killingly High School has a student ration of 11:1, which is lower than the Connecticut state average of 12:1.
What grades does Killingly High School offer ?
Killingly High School offers enrollment in grades 9-12 (Supplemental Virtual).
What school district is Killingly High School part of?
Killingly High School is part of Killingly School District.
School Reviews
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