High Schools in Regional School District 17

Summary:

Regional School District 17 in Connecticut is home to one high school, Haddam-Killingworth High School, which serves grades 9-12. This standout institution has consistently ranked among the top high schools in the state, earning a statewide ranking of 16 out of 141 schools for the 2024-2025 school year and a 5-star rating from SchoolDigger in 2022-2023.

Haddam-Killingworth High School boasts exceptional academic performance, with 85.6% of its students proficient or better in SAT/English Language Arts, 48.8% in SAT/Math, and 72.8% in NGSS/Science for the 2024-2025 school year. These scores significantly outpace the state averages, indicating the school is effectively preparing its students for academic success. The school also maintains a relatively low chronic absenteeism rate of 17.7% for the 2023-2024 school year, slightly higher than the state's target of 15%.

In terms of resources, Haddam-Killingworth High School spends $19,388 per student, which is higher than the state average, and has a 10:1 student-teacher ratio, suggesting a more personalized learning environment. With 13.9% of its students eligible for free or reduced-price lunch in the 2023-2024 school year, the school appears to serve a diverse student population in terms of socioeconomic status.

District Detail

57 Little City Road
Higganum, CT 06441

(860) 345-4534

SchoolDigger Rank:
30^th of 156 Connecticut districts

See the 2025 Connecticut District rankings!

Grades served: PK, KG-12
Students: 1,704

Primary Schools: 3
Middle Schools: 1
High Schools: 1
Alternative Schools: 0

Choose columns to see: Summary School Students/Teachers Ranking Test Scores Finance All

School													Students/Teachers											Ranking (2025)				Ranking (2024)				NGSS Science (2025)	SAT English Language Arts (2025)	SAT Math (2025)	Per Pupil Expenditures (2025)
Name	Type	Grades	Address	City	Zip	County	District	Is Charter	Is Magnet	Is Virtual	Is Title I	Phone	Enrollment	Full-time Teachers	Student/ Teacher Ratio	Free/Discounted Lunch Recipients	White	Black	Hispanic	Asian	American Indian	Pacific Islander	Two or More Races	Average Standard Score (2025)	Statewide Rank (2025)	State Percentile (2025)	SchoolDigger Rating (2025)	Average Standard Score (2024)	Statewide Rank (2024)	State Percentile (2024)	Rank Change from Previous Year	NGSS Science 11th Grade	SAT English Language Arts 11th Grade	SAT Math 11th Grade	Total
Haddam-Killingworth High School	Public	9-12	95 Little City Road	Higganum	06441	Lower Connecticut River Valley Planning Region	Regional School District 17	No	No	No	No	(860) 345-8541	466	49	9.5	13.7%	409 (87.8%)	6 (1.3%)	23 (4.9%)	10 (2.1%)	1 (0.2%)	0 (0.0%)	16 (3.4%)	88.4	16^th of 141 public high schools	88.7%		85.9	18^th of 145 public high schools	87.6%	2	72.8	85.6	48.8	$30,768

Districts nearby

District	Distance	# of Schools	Statewide Rank
Chester School District	5.76 mi	1	28^th
Regional School District 13	6.38 mi	5
East Haddam School District	6.67 mi	3	89^th
Deep River School District	7.39 mi	1	53^rd
Regional School District 04	7.5 mi	2	60^th

See the top CT Connecticut districts

SchoolDigger data sources: National Center for Education Statistics, U.S. Department of Education, the U.S. Census Bureau and the Connecticut Department of Education.

IMPORTANT DISCLAIMERS: Not all boundaries are included. We make every effort to ensure that boundaries are up-to-date. But it's important to note that these are approximations and are for general informational purposes only. To verify legal descriptions of boundaries or school locations, contact your local tax assessor's office and/or school district.