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Killingly High School

Q: Is Killingly High School a good school?

Killingly High School ranks 70 th of 141 Connecticut high schools. SchoolDigger rates this school 3 stars out of 5.

Public Grades 9-12

70^th

SchoolDigger Rank ?

of 141 Connecticut High Schools

Better than 50% of Connecticut high schools

Summary

Killingly High School is a public high school located in Dayville, Connecticut, serving grades 9-12 with a total enrollment of 762 students. The school is part of the Killingly School District, which is ranked 114 out of 156 districts in the state.

Killingly High School's academic performance has been mixed compared to the state average. While the school's 11th-grade students performed better than the state average in SAT/English Language Arts, they fell significantly behind in SAT/Math and NGSS/Science. The school's four-year graduation rate has fluctuated in recent years, ranging from 78.5% to 88.9%, generally on par with the state average. However, Killingly High School has experienced high rates of chronic absenteeism, which is a concern.

Compared to nearby schools, Killingly High School's performance is generally lower than that of E.O. Smith High School and Parish Hill High School, which have higher rankings and academic achievement. However, Killingly High School outperforms some nearby schools, such as Griswold High School and Plainfield High School, which have lower rankings and academic achievement.

744

Students ?

11.1

Student/teacher ratio ?

$21,559

Per pupil spending ?

42.9%

Free/discounted lunch ?

226 Putman Pike
Dayville, CT 06241

(860) 779-6620

District: Killingly School District

Feeder schools for Killingly High School:

Elementary:	Killingly Central School
	Killingly Memorial School
Middle:	Killingly Intermediate School

Racial breakdown:

White:

76.9%

Hispanic:

13.2%

Two or more races:

5.4%

See top rated Connecticut high schools

Compare Killingly High School to nearby high schools!

At a glance

▲ Ranking trend: Improving — 35th percentile in 2013 → 50th in 2025

Strengths

✓Ranking is trending up — up 15 percentile points since 2013

✓Above the Connecticut median (50th percentile)

✓Small classes — about 11 students per teacher

Worth a look

!Test scores below the Connecticut average (38% vs 46% meeting standards)

!High chronic absenteeism (26% vs 17% Connecticut)

!Some student groups rank well below the school's overall statewide standing

Students meeting standards (2024-2025) ?

This school38%

District avg38%

Connecticut avg46%

70^th of 141

Connecticut public high schools ?

Top 50%▲ up 14 pts since 2015

From bottom 36% (2015) to top 50% (2025)

See the entire ranking list of Connecticut High Schools →

★★★★★

SchoolDigger rating ?

114^th of 156Killingly School District among Connecticut districts

Statewide rank percentile over time (100 = the top-ranked school in the state; click a legend item to add a student group)

Show full rank history (all student groups)

All Students

Year	Avg score	Statewide rank	Connecticut percentile	Rating
2025	38.2	70 of 141	50.4%	★★★☆☆
2024	30.0	95 of 145	34.5%	★★☆☆☆
2023	67.7	47 of 142	66.9%	★★★☆☆
2022	43.3	75 of 139	46.0%	★★☆☆☆
2021	41.0	115 of 200	42.5%	★★☆☆☆
2019	42.5	74 of 121	38.8%	★★☆☆☆
2017	33.7	85 of 140	39.3%	★★☆☆☆
2016	42.9	73 of 132	44.7%	★★☆☆☆
2015	40.4	125 of 196	36.2%	★★☆☆☆
2013	50.2	125 of 193	35.2%	★★☆☆☆
2012	40.0	136 of 188	27.7%	★☆☆☆☆
2011	53.7	118 of 189	37.6%	★★☆☆☆
2010	34.0	146 of 186	21.5%	★☆☆☆☆
2009	35.6	136 of 176	22.7%	★☆☆☆☆
2008	36.1	136 of 176	22.7%	★☆☆☆☆
2007	35.9	139 of 176	21.0%	★☆☆☆☆

Female

Year	Avg score	Statewide rank	Connecticut percentile	Rating
2025	36.3	62 of 104	40.4%	★★☆☆☆
2022	30.5	69 of 106	34.9%	★★☆☆☆
2021	54.8	89 of 189	52.9%	★★★☆☆

Low Socio Economic Status

Year	Avg score	Statewide rank	Connecticut percentile	Rating
2025	54.0	28 of 70	60.0%	★★★☆☆
2021	35.1	102 of 155	34.2%	★★☆☆☆
2019	51.1	14 of 37	62.2%	★★★☆☆

Male

Year	Avg score	Statewide rank	Connecticut percentile	Rating
2025	29.5	76 of 111	31.5%	★★☆☆☆
2021	18.5	149 of 182	18.1%	★☆☆☆☆

Special Education

Year	Avg score	Statewide rank	Connecticut percentile	Rating
2021	34.7	117 of 175	33.1%	★★☆☆☆

White

Year	Avg score	Statewide rank	Connecticut percentile	Rating
2025	16.9	100 of 116	13.8%	★☆☆☆☆
2024	5.6	114 of 116	1.7%	☆☆☆☆☆
2022	13.6	102 of 117	12.8%	★☆☆☆☆
2021	24.8	127 of 155	18.1%	★☆☆☆☆

How student groups rank statewide ? (each group's percentile vs the same group at other schools — higher is better; the +/- beside each compares the group with this school's overall percentile)

Low Socio Economic Status (2025)60th percentile+10 vs school

Female (2025)40th percentile-10 vs school

Special Education (2021)33rd percentile-9 vs school

Male (2025)32nd percentile-19 vs school

White (2025)14th percentile-37 vs school

By subject vs Connecticut (2024-2025) ?

English Language Arts63%+5 vs state

Science36%-12 vs state

Math17%-14 vs state

1.0

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What people are saying

by a parent
Wednesday, May 28, 2014

As a parent of a child who attends KHS, I quickly realized the staff to student ratio is alarming aproxamately 860 students to 56 staff members. The students run the school. Many things are swept under the rug here. To the point where my family has to pack up and move to get our childeren a better educaton. The graduation rate is low very low. The board blames it on the budget vote not being passed, however they managed to build a brand new school and hand out new ipads!!! Close Quote

Schools Near Killingly High School

School	Students/Teachers	Ranking (2025)	Ranking (2024)	NGSS Science (2025)	SAT English Language Arts (2025)	SAT Math (2025)	Per Pupil Expenditures (2025)
Killingly High School	Public	9-12	226 Putman Pike	Dayville	06241	Northeastern Connecticut Planning Region	Killingly School District	No	No	No	Yes	(860) 779-6620	744	67	11.1	42.9%	572 (76.9%)	19 (2.6%)	98 (13.2%)	14 (1.9%)	1 (0.1%)	0 (0.0%)	40 (5.4%)	38.2	70^th of 141 public high schools	50.4%	30	95^th of 145 public high schools	34.5%	25	36.1	62.6	16.6	$21,559
Quinebaug Middle College	Public, Magnet	9-12	742 Upper Maple St.	Danielson	06239	Northeastern Connecticut Planning Region	Eastern Connecticut Regional Educational Service Center (EAS	No	Yes	No	Yes	(860) 932-4100	144	13	11.0	38.2%	106 (73.6%)	6 (4.2%)	23 (16.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	8 (5.6%)							(n/a)				$29,910
H. H. Ellis Technical High School	Public	9-12	613 Upper Maple St.	Danielson	06239	Northeastern Connecticut Planning Region	Connecticut Technical Education and Career System	No	No	No	No	(860) 412-7500	650	56	11.6	37.8%	528 (81.2%)	2 (0.3%)	88 (13.5%)	6 (0.9%)	3 (0.5%)	0 (0.0%)	20 (3.1%)							(n/a)			8.9	$30,060
Putnam High School	Public	9-12	152 Woodstock Ave.	Putnam	06260	Northeastern Connecticut Planning Region	Putnam School District	No	No	No	No	(860) 963-6905	253	27	9.5	59.3%	189 (74.7%)	3 (1.2%)	47 (18.6%)	3 (1.2%)	1 (0.4%)	1 (0.4%)	9 (3.6%)	24.8	97^th of 141 public high schools	31.2%	24.2	107^th of 145 public high schools	26.2%	10	26.8		19.0	$23,321
Tourtellotte Memorial High School	Public	9-12	785 Riverside Dr.	North Grosvenordale	06255	Northeastern Connecticut Planning Region	Thompson School District	No	No	No	No	(860) 923-9303	184	23	7.8	40.8%	145 (78.8%)	2 (1.1%)	21 (11.4%)	5 (2.7%)	0 (0.0%)	0 (0.0%)	11 (6.0%)							(n/a)	47.8			$34,580
The Woodstock Academy	Public	9-12	57 Academy Rd.	Woodstock	06281	Northeastern Connecticut Planning Region	The Woodstock Academy District	No	No	No	No	(860) 928-6575	1,011	63	16.1	4.5%	801 (79.2%)	26 (2.6%)	81 (8.0%)	68 (6.7%)	4 (0.4%)	2 (0.2%)	26 (2.6%)	63.8	52^nd of 141 public high schools	63.1%	59.9	61^st of 145 public high schools	57.9%	9	54.2	67.4	34.1
Plainfield High School	Public	9-12	105 Putnam Road	Central Village	06332	Northeastern Connecticut Planning Region	Plainfield School District	No	No	No	Yes	(860) 564-6417	515	50	10.2	51.8%	434 (84.3%)	23 (4.5%)	20 (3.9%)	12 (2.3%)	10 (1.9%)	3 (0.6%)	13 (2.5%)	22	104^th of 141 public high schools	26.2%	32.8	88^th of 145 public high schools	39.3%	16	29.1	46.2	11.7	$23,966
Parish Hill High School	Public	7-12	304 Parish Hill Rd.	Chaplin	06235	Northeastern Connecticut Planning Region	Regional School District 11	No	No	No	Yes	(860) 455-9584	184	25	7.4	55.4%	152 (82.6%)	3 (1.6%)	20 (10.9%)	3 (1.6%)	1 (0.5%)	0 (0.0%)	5 (2.7%)							(n/a)	50.0			$33,610
Griswold Soule Street Academy	Public	7-12	22 Soule Street	Jewett City	06351	Southeastern Connecticut Planning Region	Griswold School District	No	No	No	No	(860) 376-9129	19	3	6.3	84.2%	12 (63.2%)	0 (0.0%)	5 (26.3%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	2 (10.5%)							(n/a)				$38,679
Griswold High School	Public	9-12	267 Slater Ave.	Griswold	06351	Southeastern Connecticut Planning Region	Griswold School District	No	No	No	Yes	(860) 376-7640	606	53	11.4	52.6%	410 (67.7%)	24 (4.0%)	102 (16.8%)	14 (2.3%)	6 (1.0%)	1 (0.2%)	47 (7.8%)							(n/a)	41.5			$20,114

Frequently Asked Questions about Killingly High School

How many students attend Killingly High School?

In the 2024-25 school year, 744 students attended Killingly High School.

What schools feed into Killingly High School?

Killingly High School is fed by the following schools:

Elementary : Killingly Central School
Elementary : Killingly Memorial School
Middle : Killingly Intermediate School

What district is Killingly High School in?

Killingly School District

What is the racial makeup of Killingly High School?

Students at Killingly High School are 77% White, 13% Hispanic, 5% Two or more races, 3% African American, 2% Asian.

Is Killingly High School a good school?

Killingly High School ranks 70^th of 141 Connecticut high schools. SchoolDigger rates this school 3 stars out of 5.

Rate Killingly High School!

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CTConnecticut High School Rankings

CTConnecticut District Rankings

Schools in Dayville, CT

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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.

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
Killingly High School	Public	9-12	226 Putman Pike	Dayville	06241	Northeastern Connecticut Planning Region	Killingly School District	No	No	No	Yes	(860) 779-6620	744	67	11.1	42.9%	572 (76.9%)	19 (2.6%)	98 (13.2%)	14 (1.9%)	1 (0.1%)	0 (0.0%)	40 (5.4%)	38.2	70^th of 141 public high schools	50.4%		30	95^th of 145 public high schools	34.5%	25	36.1	62.6	16.6	$21,559
Quinebaug Middle College	Public, Magnet	9-12	742 Upper Maple St.	Danielson	06239	Northeastern Connecticut Planning Region	Eastern Connecticut Regional Educational Service Center (EAS	No	Yes	No	Yes	(860) 932-4100	144	13	11.0	38.2%	106 (73.6%)	6 (4.2%)	23 (16.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	8 (5.6%)								(n/a)				$29,910
H. H. Ellis Technical High School	Public	9-12	613 Upper Maple St.	Danielson	06239	Northeastern Connecticut Planning Region	Connecticut Technical Education and Career System	No	No	No	No	(860) 412-7500	650	56	11.6	37.8%	528 (81.2%)	2 (0.3%)	88 (13.5%)	6 (0.9%)	3 (0.5%)	0 (0.0%)	20 (3.1%)								(n/a)			8.9	$30,060
Putnam High School	Public	9-12	152 Woodstock Ave.	Putnam	06260	Northeastern Connecticut Planning Region	Putnam School District	No	No	No	No	(860) 963-6905	253	27	9.5	59.3%	189 (74.7%)	3 (1.2%)	47 (18.6%)	3 (1.2%)	1 (0.4%)	1 (0.4%)	9 (3.6%)	24.8	97^th of 141 public high schools	31.2%		24.2	107^th of 145 public high schools	26.2%	10	26.8		19.0	$23,321
Tourtellotte Memorial High School	Public	9-12	785 Riverside Dr.	North Grosvenordale	06255	Northeastern Connecticut Planning Region	Thompson School District	No	No	No	No	(860) 923-9303	184	23	7.8	40.8%	145 (78.8%)	2 (1.1%)	21 (11.4%)	5 (2.7%)	0 (0.0%)	0 (0.0%)	11 (6.0%)								(n/a)	47.8			$34,580
The Woodstock Academy	Public	9-12	57 Academy Rd.	Woodstock	06281	Northeastern Connecticut Planning Region	The Woodstock Academy District	No	No	No	No	(860) 928-6575	1,011	63	16.1	4.5%	801 (79.2%)	26 (2.6%)	81 (8.0%)	68 (6.7%)	4 (0.4%)	2 (0.2%)	26 (2.6%)	63.8	52^nd of 141 public high schools	63.1%		59.9	61^st of 145 public high schools	57.9%	9	54.2	67.4	34.1
Plainfield High School	Public	9-12	105 Putnam Road	Central Village	06332	Northeastern Connecticut Planning Region	Plainfield School District	No	No	No	Yes	(860) 564-6417	515	50	10.2	51.8%	434 (84.3%)	23 (4.5%)	20 (3.9%)	12 (2.3%)	10 (1.9%)	3 (0.6%)	13 (2.5%)	22	104^th of 141 public high schools	26.2%		32.8	88^th of 145 public high schools	39.3%	16	29.1	46.2	11.7	$23,966
Parish Hill High School	Public	7-12	304 Parish Hill Rd.	Chaplin	06235	Northeastern Connecticut Planning Region	Regional School District 11	No	No	No	Yes	(860) 455-9584	184	25	7.4	55.4%	152 (82.6%)	3 (1.6%)	20 (10.9%)	3 (1.6%)	1 (0.5%)	0 (0.0%)	5 (2.7%)								(n/a)	50.0			$33,610
Griswold Soule Street Academy	Public	7-12	22 Soule Street	Jewett City	06351	Southeastern Connecticut Planning Region	Griswold School District	No	No	No	No	(860) 376-9129	19	3	6.3	84.2%	12 (63.2%)	0 (0.0%)	5 (26.3%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	2 (10.5%)								(n/a)				$38,679
Griswold High School	Public	9-12	267 Slater Ave.	Griswold	06351	Southeastern Connecticut Planning Region	Griswold School District	No	No	No	Yes	(860) 376-7640	606	53	11.4	52.6%	410 (67.7%)	24 (4.0%)	102 (16.8%)	14 (2.3%)	6 (1.0%)	1 (0.2%)	47 (7.8%)								(n/a)	41.5			$20,114