- Enrollment
- 423
- Students per teacher
- 10.6:1
- Resource Index
- 61/100
High school (grades 9-12) · Higganum, CT
Haddam-Killingworth High School
Federal NCES profile for Haddam-Killingworth High School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 64/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 090353900759
👥 S:T ratio 64
🌟 Gifted program 30
🎓 Counselors 81
📋 Attendance 83
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Haddam-Killingworth High School earns 64/100 on the Resource Investment Index, with class sizes smaller than 89% of Connecticut schools. It is also less racially and ethnically mixed than most Connecticut schools.
- #3 of 3
- public schools in Higganum · Resource Index
- 64
- Resource Index · Higher
- 9.1:1
- small classes for Connecticut
- 10.1%
- free-lunch eligible
Haddam-Killingworth High School has class sizes smaller than 89% of Connecticut schools. Computed live against every Connecticut school reporting to NCES.
By Resource Investment Index, Haddam-Killingworth High School ranks #3 of 3 public schools in Higganum, CT.
School address
District: Regional School District 17 · Connecticut
NCES ID 090353900759 Verify on NCES CCD record →
CCD year-over-year · 2022-23 → 2023-24
-28 students YoY
Haddam-Killingworth High School shrank from 546 students in 2022-23 to 518 in 2023-24 (-5.1%).
Teacher FTE lost 51.7 → 51.4 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Shrinking CCD campus
-28 students YoY 090353900759 · Higganum, CT High · SMALL · TRAD
466 enr · 9.1:1 · 10.1% lunch · RII 64
Nearest enrollment peer: Haddam-Killingworth Middle School (423 students)
Haddam-Killingworth High School shrank from 546 students in 2022-23 to 518 in 2023-24 (-5.1%). Teacher FTE lost 51.7 → 51.4 across the same CCD years. Read with this school → · District book → · Connecticut schools → · Find another →
Haddam-Killingworth High School in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- This school
Haddam-Killingworth High School
466 students
- Haddam-Killing
Haddam-Killingworth Middle School
423 students
- Haddam-Killing
Haddam-Killingworth Intermediate School
280 students
- Burr District
Burr District Elementary School
278 students
- Killingworth E
Killingworth Elementary School
257 students
What this shows Haddam-Killingworth High School reports 466 students on the CCD universe file.
How Haddam-Killingworth High School compares
Haddam-Killingworth High School is a shrinking campus on CCD: ratios and free-lunch share vs Connecticut and U.S. means.
| Metric | This school | vs Connecticut | Connecticut avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 9.1:1 | ▼ 25% | 12.1:1 | 15.7:1 |
| Free-lunch eligible | 10.1% | ▼ 72% | 36.4% | 51.7% |
| Enrollment | 466 | top 38% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
9.1:1
Leaner classes than 92% of US schools, among the more generously staffed nationally.
466
Bigger than 57% of US schools by enrollment, mid-sized for the country.
Equity indicators methodology
Economic need
10.1%
free-lunch eligible
- 72% below the Connecticut average of 36.4%
Below the 40% Title I threshold, among the lower-need profiles in the state; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
9.1:1
students per teacher
- 25% below state mean
Top 11% in Connecticut - lower ratio than 89% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
6.9%
chronically absent (missed 10%+ of school days)
In the 5-10% range, close to the pre-pandemic national baseline.
Funding equity
$25,889
per pupil, district-wide
- above Connecticut avg of $24,680
Well above the U.S. public-school average, reflecting substantially higher local or state investment per enrolled student.
Support staff
Counselors5.0 FTE
Per 93 students, the combined health-and-guidance staffing load for this school.
Discipline context
24
in-school suspensions + 9 out-of-school
Suspension rate: 5.2 per 100 students. Combined in-school and out-of-school rate: 7.1 per 100 students. Reported via the Civil Rights Data Collection. Includes 5 expulsions.
Student demographics
White 88.0%
Hispanic or Latino 4.9%
Two or More 3.4%
Asian 2.2%
African American 1.3%
American Indian / Alaska Native 0.2%
Largest group: White at 88.0% of enrollment.
Student-body diversity index 22.1/100
Simpson diversity index - at 22.1, Haddam-Killingworth High School is less mixed than the Connecticut school average of 50.5.
Programs
AP courses offered 14
District finance for Regional School District 17 reports $25,889 per pupil (NCES F-33) - open the district page for the full revenue mix.
How Haddam-Killingworth High School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Haddam-Killingworth Middle School | Similar size | Similar economic need | Higher S:T ratio |
| Haddam-Killingworth Intermediate School | Smaller | Similar economic need | Similar S:T ratio |
| Burr District Elementary School | Smaller | Similar economic need | Similar S:T ratio |
| Killingworth Elementary School | Smaller | Similar economic need | Higher S:T ratio |
Comparisons are relative to Haddam-Killingworth High School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 280
- Students per teacher
- 10.4:1
- Resource Index
- 54/100
- Enrollment
- 278
- Students per teacher
- 9.9:1
- Resource Index
- 70/100
- Enrollment
- 257
- Students per teacher
- 11.2:1
- Resource Index
- 73/100
Nationwide high schools with similar size or staffing
Out-of-state peers matched by enrollment and by student-teacher ratio, not the same-city or same-district lists above.
Similar enrollment (~466 students)
Similar student-teacher ratio (~9.1:1)
Frequently asked questions about Haddam-Killingworth High School
How many students attend Haddam-Killingworth High School?
Haddam-Killingworth High School has 466 students enrolled. It is a high school in Higganum, CT. CCD year-over-year: 546 (2022-23) → 518 (2023-24), down 28.
What is the student-teacher ratio at Haddam-Killingworth High School?
The student-teacher ratio at Haddam-Killingworth High School is 9.1:1, which is 25% lower than the Connecticut average of 12.1:1 and 42% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
What percentage of students receive free lunch at Haddam-Killingworth High School?
10.1% of students at Haddam-Killingworth High School are eligible for free lunch, compared to the Connecticut average of 36.4%.
What is the racial and ethnic makeup of Haddam-Killingworth High School?
The largest demographic group at Haddam-Killingworth High School is White at 88.0% of enrollment, in Higganum, CT.
What is the Resource Investment Index for Haddam-Killingworth High School?
Haddam-Killingworth High School has a Resource Investment Index of 64/100 (higher reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, gifted-program reporting, counselor availability, chronic absenteeism. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Haddam-Killingworth High School rank among public schools in Higganum?
By Resource Investment Index, Haddam-Killingworth High School ranks #3 of 3 public schools in Higganum, CT. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking.
What other schools are in Regional School District 17?
Besides Haddam-Killingworth High School, Regional School District 17 also operates Haddam-Killingworth Middle School (423 students), Haddam-Killingworth Intermediate School (280 students), and Burr District Elementary School (278 students). See the Regional School District 17 district page for the complete list.