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Schools›Connecticut›Dayville
SCHOOL COMMUNITY·KILLINGLY SCHOOL DISTRICT·NCES 090207000392

Killingly High School

226 Putman Pike, Dayville, CT 06241 · (860) 779-6620 · Northeastern Connecticut Planning Region
GRADES 09–12HIGH41-RURALTITLE IREGULAR SCHOOL744 STUDENTS
Enrollment
744
High
DISTRICT 560 · STATE 788
Student : Teacher
11.1:1
67 FTE teachers
DISTRICT 11.8:1 · STATE 12.3:1
Free / Reduced Lunch
43%
319 students
DISTRICT 53% · STATE 44%
Community
6
0 members
Enrollment and student:teacher ratio compared against other high schools. Free/Reduced Lunch and demographics compared against all schools.

Enrollment by grade, 2024-25

GradeStudentsShare
Grade 919426%
Grade 1018425%
Grade 1120528%
Grade 1216122%
Student demographics
39%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 41% · STATE 67% · US 70%
White
57277%
DISTRICT 75% · STATE 46% · US 43%
Hispanic
9813%
DISTRICT 14% · STATE 32% · US 30%
Black
193%
DISTRICT 2% · STATE 12% · US 15%
Asian
142%
DISTRICT 2% · STATE 5% · US 6%
Two+
405%
DISTRICT 7% · STATE 5% · US 5%
Native American
10%
DISTRICT 0% · STATE 0% · US 1%
Student head counts by race/ethnicity from federal NCES enrollment data. District, state, and US figures are each group's share of all public school students in that area (US excludes territories). Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
Male
36349%
Female
38151%

School pathway

Feeds from
Killingly Intermediate School05–08
Based on grade levels within Killingly School District. Attendance zones can vary; confirm enrollment with the district.

Discussions

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Schools most like Killingly High School

SchoolStudentsLow-incomeProficient
Killingly High School this school74442.9%N/A
Watertown High School
Watertown
69340.4%N/A
H. H. Ellis Technical High School
Danielson
65037.8%N/A
Oliver Wolcott Technical High School
Torrington
64336.4%N/A
Plainville High School
Plainville
67443.3%N/A
Griswold High School
Griswold
60652.6%N/A
Matched among Connecticut high schools on enrollment, the share of students from low-income families (eligible for free or reduced-price lunch), and racial and ethnic makeup. Proficient is the average share of students meeting the state standard across all of the school's state tests in 2023-24 and 2024-25, the same combined score our test-score rankings use. Online schools and schools serving specialized populations are not matched.

Where Killingly High School ranks

Among high schools
MeasureThis schoolIn ConnecticutIn Northeastern Connecticut Planning Region
Enrollment
ranked largest first
744#79 of 201#2 of 8
Students per teacher
ranked fewest first
11.1:1#78 of 188N/A
Diversity index
ranked most diverse first
38.8%#141 of 188N/A
Free and reduced lunch
ranked highest share first
42.9%#98 of 196#4 of 8
Enrollment change since 2017-18
ranked steepest decline first
-7.2%#89 of 120#4 of 7
Ranked against other public high schools. Online schools are left out of every list, and test-score lists leave out schools that serve specialized populations. Each rank links to the full list. Arrows under a test-score rank show places moved since the prior test year, among schools tested both years.

4-year change

SY 2020-21 vs SY 2024-25
Enrollment
744
0 (0%) vs 2020
-15% since 1990-91, when it was 880
Student : Teacher
11.1:1
was 11.1:1
Source: NCES Common Core of Data

Enrollment and staffing by year

School yearStudentsTeachers (FTE)Students per teacherFree and reduced lunch
2024-2574466.911.1:143% (319)
2023-2476265.111.7:143% (328)
2022-2378866.411.9:143% (341)
2020-217446711.1:138% (280)
2017-1880274.910.7:131% (249)
2015-168256712.3:134% (284)
2010-117886811.6:136% (280)
2000-019947114.0:1N/A
1990-918807212.2:1N/A
Source: NCES Common Core of Data. Rows are the federal collections on file for Killingly High School.

Since 2017-18: students down 7% (802 to 744); teachers down 11% (74.9 to 66.9).

About Killingly High School

Killingly High School serves students in Dayville, Connecticut, as a medium-sized high school. It serves 744 students in grades 9 through 12.

Killingly School District, which runs Killingly High School, has 4 schools and 2,238 students.

At Killingly High School, White students make up 77% of the student body. The next largest groups are 13% Hispanic, 5% multiracial, and 3% Black. The school's White share is 10 points below the 87% share among Northeastern Connecticut Planning Region residents. Pick two students at random and there is a 39% chance they belong to different racial or ethnic groups; that figure is the school's diversity index.

Teacher staffing is 66.9 full-time equivalents, or about 11.1 students per teacher. This ratio sits 1.2 below the 12.3:1 average for high schools in Connecticut. Eligibility for subsidized school meals is 43%. That tracks the 42% average for public schools in Northeastern Connecticut Planning Region.

Recent Census Bureau figures for Northeastern Connecticut Planning Region show that the median household income is $90,589, about 26% of adults have at least a bachelor's degree, and the poverty rate is about 5%. Besides Killingly High School, Northeastern Connecticut Planning Region has 33 other public schools.

Killingly Central School is the public school closest to Killingly High School, about 0.9 miles away. The count of other public schools within five miles is 7.

Locale data from NCES put Killingly High School in rural territory close to an urban area (Rural: Fringe).

Enrollment has been fairly stable: 744 in 2020-21 and 744 in 2024-25.

Community posts for Killingly High School can cover enrollment questions, class placement, and PTA news. Alumni can share how the school prepared them.

Northeastern Connecticut Planning Region at a glance

View full county profile
Population
96,312
Census ACS
Median income
$90,589
Household, ACS
Bachelor's+
26%
Adults 25+
Poverty rate
5%
Below federal line
Schools in county
34
11,909 students

Quick facts

School name
Killingly High School
District
Killingly School District
Address
226 Putman Pike, Dayville, CT 06241
Phone
(860) 779-6620
County
Northeastern Connecticut Planning Region
Level
High
Grade range
09–12
Total enrollment
744
Teachers (FTE)
67
Student–teacher ratio
11.1:1
Free and reduced lunch
319 (43%)
Locale
41-Rural: Fringe
NCES ID
090207000392
Charter school
No
Virtual school
No

Related schools

Other schools in Killingly School District
Other schools in Dayville
Nearby schools

Frequently asked questions

About Killingly High School
What is the total enrollment at Killingly High School?
Killingly High School enrolls approximately 744 students in grades 09-12.
What grades does Killingly High School serve?
Killingly High School serves grades 09-12.
How many students per teacher at Killingly High School?
Approximately 11.1:1 students per teacher at Killingly High School.
What is the student diversity at Killingly High School?
Student demographics at Killingly High School are roughly 77% White, 13% Hispanic, 3% Black, 2% Asian, 5% Two or more.
Is Killingly High School public or private?
Killingly High School is a public K-12 school, overseen by Killingly School District.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.
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