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H. H. Ellis Technical High School

Public Grades 9-12

Summary

H. H. Ellis Technical High School is a public high school serving grades 9-12 in Danielson, Connecticut, with a student population of 668 that is predominantly White (82.34% in 2022-2023). The school is part of the Eastern Connecticut Regional Educational Service Center (EAS) district, which is ranked 144 out of 158 districts in the state and has a 0-star rating from SchoolDigger.

Despite the school's technical focus, H. H. Ellis Technical High School has consistently underperformed compared to the state and its district averages on standardized tests. In the 2023-2024 school year, only 35.9% of 11th-grade students were proficient or better in SAT/English Language Arts, compared to the state average of 54.8%. In SAT/Math, the school's proficiency rate was just 8.5%, significantly lower than the state's 29.5%. The school's statewide ranking has fluctuated over the years, but it has generally been in the bottom half of Connecticut high schools, ranking 120 out of 145 high schools in the 2023-2024 school year with a 1-star rating from SchoolDigger.

When compared to nearby schools, H. H. Ellis Technical High School generally underperforms. For example, Windham High School, located 17.77 miles away, had significantly lower test scores and a lower statewide ranking than the state average, but still outperformed H. H. Ellis Technical High School. Additionally, the school's spending per student is not significantly higher than nearby schools, suggesting that the school's underperformance is not due to a lack of funding. The school's student-teacher ratio has remained relatively consistent, ranging from 13 to 14.2 over the past three school years, which is not significantly different from nearby schools.

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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Compare H. H. Ellis Technical High School to nearby high schools!

At a glance

▼ Ranking trend: Declining — 40th percentile in 2011 → 17th in 2024

Strengths

✓97% graduate in 4 years — above the Connecticut average (89%)

✓Small classes — about 12 students per teacher

Worth a look

!Test scores below the Connecticut average (9% vs 31% meeting standards)

!Ranking has slipped — down 23 percentile points since 2011

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

Students meeting standards (2024-2025) ?

This school9%

District avg10%

Connecticut avg31%

Not ranked this year

H. H. Ellis Technical High School did not have enough recent test-score data to be ranked. Check the trend below for past years.

144^th of 156Connecticut 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
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
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
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 (2021)43rd percentile+13 vs school

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

Male (2021)25th percentile-4 vs school

Female (2024)16th percentile~ school

White (2023)3rd percentile-32 vs school

★

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Schools Near H. H. Ellis Technical High School

School	Students/Teachers	Ranking (2025)	Ranking (2024)	NGSS Science (2025)	SAT English Language Arts (2025)	SAT Math (2025)	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%)							(n/a)			8.9	$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)				$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%)	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
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
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
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
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
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 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

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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
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
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
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
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
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
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
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
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