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H. H. Ellis Technical High School

Q: Is H. H. Ellis Technical High School a good school?

H. H. Ellis Technical High School ranks 78 th of 135 Connecticut high schools. SchoolDigger rates this school 2 stars out of 5.

Public Grades 9-12

78^th

SchoolDigger Rank ?

of 135 Connecticut High Schools

Better than 42% of Connecticut high schools

Summary

H. H. Ellis Technical High School is a public career and technical high school in Danielson, CT, serving about 650 students in grades 9-12 as part of the Connecticut Technical Education and Career System. With a student-teacher ratio of 11.6-to-1 and roughly 38% of students eligible for free or reduced-price lunch, Ellis is one of the larger high schools in the Danielson area. It has also improved significantly in recent years, jumping from the 17th percentile in the 2023-2024 state rankings to the 43rd percentile in 2025-2026.

Ellis's biggest strengths are graduation, attendance, and science. The school posts a 98.1% graduation rate, well above the state average of 91.2% and far above nearby Killingly High School's 86.9% and Windham High School's 86.7%. Chronic absenteeism is just 16.6%, essentially matching the state rate and dramatically better than Plainfield High School (30.6%), Killingly (29.1%), and Windham (31.4%). On the NGSS science exam, 51.6% of Ellis students are proficient, slightly above the state average and well ahead of nearby schools like Killingly (36.1%) and Putnam High School (26.8%). Ellis also ranks in the 62nd percentile for supporting low-income students, a notable strength given that nearly 4 in 10 students come from low-income households.

The main academic concern is math: only 11.8% of Ellis 11th graders are proficient on the SAT math exam, compared to 31.3% statewide. Nearby Quinebaug Middle College (37%) and The Woodstock Academy (34.1%) are significantly stronger in math, though Ellis beats both on graduation and attendance. Compared to its own district, Ellis outperforms the Connecticut Technical Education and Career System averages on every key metric—graduation (98.1% vs. 97.8%), absenteeism (16.6% vs. 18.3%), ELA (42.8% vs. 33.6%), math (11.8% vs. 8.9%), and science (51.6% vs. 38.4%). For parents, Ellis offers a hands-on technical education with strong student engagement and persistence, but families should know that extra math support may be needed.

650

Students ?

11.6

Student/teacher ratio ?

$30,060

Per pupil spending ?

37.8%

Free/discounted lunch ?

613 Upper Maple St.
Danielson, CT 06239

(860) 412-7500

District: Connecticut Technical Education and Career System

Racial breakdown:

White:

81.2%

Hispanic:

13.5%

Two or more races:

3.1%

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At a glance

▲ Ranking trend: Rebounding — 17th percentile in 2024 → 42nd in 2026

Strengths

✓98% graduate in 4 years — above the Connecticut average (91%)

✓Ranking is rebounding — up to 42nd (2026) from a 17th-percentile low (2024)

✓Among the top-ranked schools in Connecticut Technical Education and Career System

Worth a look

!Test scores below the Connecticut average (35% vs 46% meeting standards)

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

!Math scores 19 pts below the Connecticut average

Students meeting standards (2025-2026) ?

This school35%

District avg27%

Connecticut avg46%

78^th of 135

Connecticut public high schools ?

Bottom 42%▲ up 9 pts since 2016

From bottom 33% (2016) to bottom 42% (2026)

See the entire ranking list of Connecticut High Schools →

★★★★★

SchoolDigger rating ?

3^rd of 16High Schools in the Connecticut Technical Education and Career System

138^th of 153Connecticut Technical Education and Career System 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
2026	33.6	78 of 135	42.2%	★★☆☆☆
2024	16.1	120 of 145	17.2%	★☆☆☆☆
2023	29.4	92 of 142	35.2%	★★☆☆☆
2022	27.2	88 of 139	36.7%	★★☆☆☆
2021	29.1	141 of 200	29.5%	★☆☆☆☆
2017	56.6	61 of 140	56.4%	★★★☆☆
2016	30.5	88 of 132	33.3%	★★☆☆☆
2015	28.9	153 of 196	21.9%	★☆☆☆☆
2013	56.7	113 of 193	41.5%	★★☆☆☆
2012	63.3	98 of 188	47.9%	★★☆☆☆
2011	55.4	113 of 189	40.2%	★★☆☆☆
2010	64.6	89 of 186	52.2%	★★★☆☆
2009	62.2	92 of 176	47.7%	★★☆☆☆
2008	69.1	69 of 176	60.8%	★★★☆☆
2007	52.2	118 of 176	33.0%	★★☆☆☆

Female

Year	Avg score	Statewide rank	Connecticut percentile	Rating
2024	16.6	86 of 102	15.7%	★☆☆☆☆
2022	18.7	80 of 106	24.5%	★☆☆☆☆
2021	26.8	134 of 189	29.1%	★☆☆☆☆

Low Socio Economic Status

Year	Avg score	Statewide rank	Connecticut percentile	Rating
2026	56.9	26 of 69	62.3%	★★★☆☆
2021	40.0	89 of 155	42.6%	★★☆☆☆

Male

Year	Avg score	Statewide rank	Connecticut percentile	Rating
2021	27.6	136 of 182	25.3%	★☆☆☆☆

Special Education

Year	Avg score	Statewide rank	Connecticut percentile	Rating
2021	38.7	109 of 175	37.7%	★★☆☆☆

White

Year	Avg score	Statewide rank	Connecticut percentile	Rating
2026	9.0	100 of 107	6.5%	☆☆☆☆☆
2023	5.0	112 of 116	3.4%	☆☆☆☆☆
2022	9.5	108 of 117	7.7%	☆☆☆☆☆
2021	9.5	144 of 155	7.1%	☆☆☆☆☆

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 (2026)62nd percentile+20 vs school

Special Education (2021)38th percentile+8 vs school

Male (2021)25th percentile-4 vs school

Female (2024)16th percentile~ school

White (2026)7th percentile-36 vs school

By subject vs Connecticut (2025-2026) ?

Science52%~ state avg

English Language Arts43%-12 vs state

Math12%-19 vs state

★

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Schools Near H. H. Ellis Technical High School

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Ranking:

E Elementary M Middle H High A Alternative P Private

School	Students/Teachers	Ranking (2026)	Ranking ()	NGSS Science (2026)	SAT English Language Arts (2026)	SAT Math (2026)	SBAC English Language Arts (2026)	SBAC Mathematics (2026)	Per Pupil Expenditures (2025)
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%)	33.6	78^th of 135 public high schools	42.2%	(n/a)		51.6	42.8	11.8					$30,060
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)		1102.0		37.0					$29,910
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%)				(n/a)		1089.0							$21,559
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%)				(n/a)		1092.0		7.0					$23,966
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%)				(n/a)		1088.0		15.3					$23,321
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%)				(n/a)		1096.0
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%)	27	88^th of 135 public high schools	34.8%	(n/a)		27.3		20.6					$34,580
Parish Hill High School	Public	7-12	304 Parish Hill Rd.	Chaplin	06235	Capitol 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)	793.0	1106.0		23.3	2539.0	2540.0	25.0	15.0	$33,610
Griswold Soule Street Academy	Public	7-12	22 Soule Street	Jewett City	06351	Northeastern 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	Northeastern 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)		1106.0							$20,114

Frequently Asked Questions about H. H. Ellis Technical High School

What is the racial makeup of H. H. Ellis Technical High School?

Students at H. H. Ellis Technical High School are 81% White, 14% Hispanic, 3% Two or more races.

How many students attend H. H. Ellis Technical High School?

In the 2024-25 school year, 650 students attended H. H. Ellis Technical High School.

What district is H. H. Ellis Technical High School in?

Connecticut Technical Education and Career System

Is H. H. Ellis Technical High School a good school?

H. H. Ellis Technical High School ranks 78^th of 135 Connecticut high schools. SchoolDigger rates this school 2 stars out of 5.

Rate H. H. Ellis Technical High School!

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Schools in Danielson, CT

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Latest Connecticut data All new data »

2024–25 through 2025–26 attendance data & graduation ratesAug 31, 2026

2025–26 NGSS, SAT & SBAC test scoresAug 31, 2026

2024–25 school spending dataApr 2, 2026

2024–25 attendance dataNov 6, 2025

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 (2026)				Ranking ()				NGSS Science (2026)		SAT English Language Arts (2026)	SAT Math (2026)	SBAC English Language Arts (2026)		SBAC Mathematics (2026)		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 (2025)	White	Black	Hispanic	Asian	American Indian	Pacific Islander	Two or More Races	Average Standard Score (2026)	Statewide Rank (2026)	State Percentile (2026)	SchoolDigger Rating (2026)	Average Standard Score ()	Statewide Rank ()	State Percentile ()	Rank Change from Previous Year	NGSS Science 8th Grade	NGSS Science 11th Grade	SAT English Language Arts 11th Grade	SAT Math 11th Grade	SBAC English Language Arts 7th Grade	SBAC English Language Arts 8th Grade	SBAC Mathematics 7th Grade	SBAC Mathematics 8th Grade	Total
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%)	33.6	78^th of 135 public high schools	42.2%					(n/a)		51.6	42.8	11.8					$30,060
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)		1102.0		37.0					$29,910
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%)								(n/a)		1089.0							$21,559
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%)								(n/a)		1092.0		7.0					$23,966
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%)								(n/a)		1088.0		15.3					$23,321
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%)								(n/a)		1096.0
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%)	27	88^th of 135 public high schools	34.8%					(n/a)		27.3		20.6					$34,580
Parish Hill High School	Public	7-12	304 Parish Hill Rd.	Chaplin	06235	Capitol 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)	793.0	1106.0		23.3	2539.0	2540.0	25.0	15.0	$33,610
Griswold Soule Street Academy	Public	7-12	22 Soule Street	Jewett City	06351	Northeastern 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	Northeastern 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)		1106.0							$20,114