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Schools›Connecticut›Higganum
SCHOOL COMMUNITY·REGIONAL SCHOOL DISTRICT 17·NCES 090353900759

Haddam-Killingworth High School

95 Little City Road, Higganum, CT 06441 · (860) 345-8541 · Lower Connecticut River Valley Planning Region
GRADES 09–12HIGH41-RURALREGULAR SCHOOL466 STUDENTS
·
allk12 Grade
Not graded

This school has no state test results for 2023-24 or 2024-25 to grade, which is common for schools that end before third grade. How grades work

Enrollment
466
High
DISTRICT 341 · STATE 788
Student : Teacher
9.6:1
49 FTE teachers
DISTRICT 11.1:1 · STATE 12.3:1
Free / Reduced Lunch
14%
64 students
DISTRICT 17% · 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 99621%
Grade 1012026%
Grade 1113028%
Grade 1212026%
Student demographics
22%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 20% · STATE 67% · US 70%
White
40988%
DISTRICT 89% · STATE 46% · US 43%
Hispanic
235%
DISTRICT 5% · STATE 32% · US 30%
Black
61%
DISTRICT 1% · STATE 12% · US 15%
Asian
102%
DISTRICT 1% · STATE 5% · US 6%
Two+
163%
DISTRICT 3% · 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
25455%
Female
21145%

School pathway

Feeds from
Haddam-Killingworth Middle School06–08
Based on grade levels within Regional School District 17. Attendance zones can vary; confirm enrollment with the district.

Discussions

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Schools most like Haddam-Killingworth High School

SchoolStudentsLow-incomeProficient
Haddam-Killingworth High School this school46613.7%N/A
Coginchaug Regional High School
Durham
35615.7%N/A
Shepaug Valley School
Washington
48618.3%N/A
Oxford High School
Oxford
47617.9%N/A
Wheeler High School
North Stonington
34418.6%N/A
Granby Memorial High School
Granby
56415.2%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 Haddam-Killingworth High School ranks

Among high schools
MeasureThis schoolIn ConnecticutIn Lower Connecticut River Valley Planning Region
Enrollment
ranked largest first
466#142 of 201#6 of 13
Students per teacher
ranked fewest first
9.6:1#21 of 188#5 of 12
Diversity index
ranked most diverse first
22.2%#184 of 188#12 of 12
Free and reduced lunch
ranked highest share first
13.7%#183 of 196#12 of 13
Enrollment change since 2017-18
ranked steepest decline first
-30.8%#7 of 120#3 of 11
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
466
-149 (-24%) vs 2020
-10% since 1990-91, when it was 519
Student : Teacher
9.6:1
was 11.4:1
Source: NCES Common Core of Data

Enrollment and staffing by year

School yearStudentsTeachers (FTE)Students per teacherFree and reduced lunch
2024-2546648.89.6:114% (64)
2023-2451851.410.1:114% (72)
2022-2354651.710.6:112% (64)
2020-216155411.4:115% (93)
2017-1867357.311.8:19% (62)
2015-166185311.7:111% (67)
2010-116805711.9:18% (53)
2000-016355312.0:1N/A
1990-915194511.5:1N/A
Source: NCES Common Core of Data. Rows are the federal collections on file for Haddam-Killingworth High School.

Since 2017-18: students down 31% (673 to 466); teachers down 15% (57.3 to 48.8).

About Haddam-Killingworth High School

Haddam-Killingworth High School is a small high school in Higganum, Connecticut, administered by Regional School District 17. The school enrolls 466 students, from grades 9 through 12. An average school in this group (high schools in Connecticut) has about 788 students.

Haddam-Killingworth High School is in Regional School District 17, a district with 1,704 students across 5 schools.

At Haddam-Killingworth High School, White students make up 88% of the student body. The remaining students are 5% Hispanic, 3% multiracial, and 2% Asian. Haddam-Killingworth High School has a diversity index of 22%, compared with 70% for all US public school students.

The count of teachers at Haddam-Killingworth High School is 48.8 full-time equivalents, for a ratio of 9.6:1. The average ratio among high schools in Connecticut is 12.3:1, higher than at this school. Around 14% of the school's students qualify for free or reduced-price meals. Public schools in Lower Connecticut River Valley Planning Region average 32%.

Across Lower Connecticut River Valley Planning Region, median household income is about $104,428, about 46% of adults have at least a bachelor's degree, and the poverty rate is about 4%. Haddam-Killingworth High School is among the 57 public schools in Lower Connecticut River Valley Planning Region.

The closest public school, Burr District Elementary School, is about 1.4 miles from Haddam-Killingworth High School. Around the school, at least 8 other public schools are within ten miles.

Locale: Rural: Fringe. In NCES terms, the school is in rural territory close to an urban area.

The number of students declined from 615 to 466 over 4 years. From 2020-21 to 2024-25, the ratio fell from 11.4:1 to 9.6:1.

Conversations here can range across science fairs, picture day, and bus routes. Posting is open to anyone connected to the school.

Lower Connecticut River Valley Planning Region at a glance

View full county profile
Population
175,822
Census ACS
Median income
$104,428
Household, ACS
Bachelor's+
46%
Adults 25+
Poverty rate
4%
Below federal line
Schools in county
57
19,075 students

Quick facts

School name
Haddam-Killingworth High School
District
Regional School District 17
Address
95 Little City Road, Higganum, CT 06441
Phone
(860) 345-8541
County
Lower Connecticut River Valley Planning Region
Level
High
Grade range
09–12
Total enrollment
466
Teachers (FTE)
49
Student–teacher ratio
9.6:1
Free and reduced lunch
64 (14%)
Locale
41-Rural: Fringe
NCES ID
090353900759
Charter school
No
Virtual school
No

Related schools

Other schools in Regional School District 17
Other schools in Higganum
Nearby schools

Frequently asked questions

About Haddam-Killingworth High School
How large is Haddam-Killingworth High School?
Haddam-Killingworth High School enrolls approximately 466 students in grades 09-12.
Is Haddam-Killingworth High School an elementary, middle, or high school?
Haddam-Killingworth High School is a high school covering grades 09-12.
How many teachers does Haddam-Killingworth High School have?
Haddam-Killingworth High School employs 49 FTE teachers, for a student-to-teacher ratio of 9.6:1.
What is the racial breakdown of students at Haddam-Killingworth High School?
At Haddam-Killingworth High School, the student body is approximately 88% White, 5% Hispanic, 1% Black, 2% Asian, 3% Two or more.
Is Haddam-Killingworth High School public or private?
Haddam-Killingworth High School is a public K-12 school, overseen by Regional School District 17.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.
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