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Emmett O'Brien Technical High School

Public Grades 9-12

102^nd

SchoolDigger Rank ?

of 135 Connecticut High Schools

Better than 24% of Connecticut high schools

Summary

Emmett O'Brien Technical High School is a public career and technical high school in Ansonia, CT, serving 618 students in grades 9 through 12 as part of the Connecticut Technical Education and Career System. The school draws from a moderate-poverty area, with 43.7% of students qualifying for free or reduced-price lunch — lower than nearby Ansonia High School (59.3%) and Derby High School (53.6%), but higher than affluent neighbors like Amity Regional High School (16.8%).

The school's biggest strengths are in student engagement and persistence. O'Brien graduates 96.7% of its students, far above the state average of 91.2% and dramatically better than Ansonia High School's 83.1%. In fact, its graduation rate rivals top-performing schools like Woodland Regional High School (95.9%) and Amity Regional High School (96.3%). Chronic absenteeism has also fallen from 30.7% in 2021–2022 to 16.8% in 2025–2026, now essentially at the state average and far better than Platt Technical High School (25.8%), another school in the same technical education system. For families comparing local options, O'Brien stands out favorably against Ansonia High School in graduation rate, science proficiency (36.1% vs. 24.3%), and poverty level.

Academically, the picture is more mixed. Only 7.3% of 11th graders scored proficient on the SAT Math assessment, the lowest among nearby schools and well below the state average of 31.3%. Even Platt Technical High School, which shares the same district, posted more than double O'Brien's math proficiency (17.5%). English proficiency, at 38%, is improving and above the district average, but still trails schools like Seymour High School (53.8%) and Woodland Regional High School (76.7%). Science is a relative bright spot: 36.1% of students are proficient on the NGSS assessment, outpacing Platt Technical High School (23.8%), Ansonia High School (24.3%), and Derby High School (28.4%). O'Brien's combination of high graduation rates and low test scores reflects its career-technical mission, where hands-on credentialing matters — but the single-digit math proficiency is a serious concern for families to weigh, especially for students heading into technical fields that rely on math.

618

Students ?

12.1

Student/teacher ratio ?

$29,511

Per pupil spending ?

43.7%

Free/discounted lunch ?

141 Prindle Ave.
Ansonia, CT 06401

(203) 732-1800

District: Connecticut Technical Education and Career System

Racial breakdown:

White:

44.5%

Hispanic:

37.2%

African American:

11.3%

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Compare Emmett O'Brien Technical High School to nearby high schools!

At a glance

▬ Ranking trend: Holding steady — 26th percentile in 2011 → 24th in 2026

Strengths

✓97% graduate in 4 years — above the Connecticut average (91%)

Worth a look

!Test scores below the Connecticut average (27% vs 46% meeting standards)

!In the lower quartile statewide (24th percentile)

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

Students meeting standards (2025-2026) ?

This school27%

District avg27%

Connecticut avg46%

102^nd of 135

Connecticut public high schools ?

Bottom 24%▲ up 6 pts since 2016

From bottom 18% (2016) to bottom 24% (2026)

See the entire ranking list of Connecticut High Schools →

★★★★★

SchoolDigger rating ?

10^th 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	20.7	102 of 135	24.4%	★☆☆☆☆
2024	10.1	128 of 145	11.7%	★☆☆☆☆
2022	29.4	87 of 139	37.4%	★★☆☆☆
2021	24.6	150 of 200	25.0%	★☆☆☆☆
2017	21.5	112 of 140	20.0%	★☆☆☆☆
2016	19.6	108 of 132	18.2%	★☆☆☆☆
2015	26.1	159 of 196	18.9%	★☆☆☆☆
2013	49.9	126 of 193	34.7%	★★☆☆☆
2012	54.6	111 of 188	41.0%	★★☆☆☆
2011	39.8	139 of 189	26.5%	★☆☆☆☆
2010	60.8	104 of 186	44.1%	★★☆☆☆
2009	60.4	95 of 176	46.0%	★★☆☆☆
2008	61.7	96 of 176	45.5%	★★☆☆☆
2007	66.3	83 of 176	52.8%	★★★☆☆

Female

Year	Avg score	Statewide rank	Connecticut percentile	Rating
2022	18.7	81 of 106	23.6%	★☆☆☆☆
2021	20.6	147 of 189	22.2%	★☆☆☆☆

Hispanic

Year	Avg score	Statewide rank	Connecticut percentile	Rating
2024	38.7	36 of 63	42.9%	★★☆☆☆
2023	53.3	18 of 63	71.4%	★★★★☆
2021	30.9	66 of 104	36.5%	★★☆☆☆

Low Socio Economic Status

Year	Avg score	Statewide rank	Connecticut percentile	Rating
2021	31.8	110 of 155	29.0%	★★☆☆☆

Male

Year	Avg score	Statewide rank	Connecticut percentile	Rating
2021	25.5	140 of 182	23.1%	★☆☆☆☆

Special Education

Year	Avg score	Statewide rank	Connecticut percentile	Rating
2021	32.8	123 of 175	29.7%	★★☆☆☆
2018	21.7	4 of 13	69.2%	★★★☆☆

White

Year	Avg score	Statewide rank	Connecticut percentile	Rating
2026	4.9	105 of 107	1.9%	☆☆☆☆☆
2023	3.8	113 of 116	2.6%	☆☆☆☆☆
2022	10.4	107 of 117	8.5%	☆☆☆☆☆
2021	13.2	139 of 155	10.3%	★☆☆☆☆

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)

Hispanic (2024)43rd percentile+31 vs school

Special Education (2021)30th percentile+5 vs school

Low Socio Economic Status (2021)29th percentile+4 vs school

Female (2022)24th percentile-14 vs school

Male (2021)23rd percentile~ school

White (2026)2nd percentile-23 vs school

By subject vs Connecticut (2025-2026) ?

English Language Arts38%-17 vs state

Science36%-14 vs state

Math7%-24 vs state

★

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Schools Near Emmett O'Brien Technical High School

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Ranking:

E Elementary M Middle H High A Alternative P Private

School	Students/Teachers	Ranking (2026)	Ranking (2025)	NGSS Science (2026)	SAT English Language Arts (2026)	SAT Math (2026)	SBAC English Language Arts (2026)	SBAC Mathematics (2026)	Per Pupil Expenditures (2025)
Emmett O'Brien Technical High School	Public	9-12	141 Prindle Ave.	Ansonia	06401	Naugatuck Valley Planning Region	Connecticut Technical Education and Career System	No	No	No	No	(203) 732-1800	618	51	12.1	43.7%	275 (44.5%)	70 (11.3%)	230 (37.2%)	3 (0.5%)	2 (0.3%)	35 (5.7%)	20.7	102^nd of 135 public high schools	24.4%				(n/a)		36.1	38.0	7.3							$29,511
Ansonia High School	Public	9-12	20 Pulaski Hwy.	Ansonia	06401	Naugatuck Valley Planning Region	Ansonia School District	No	No	No	No	(203) 736-5060	617	48	12.8	59.3%	157 (25.4%)	119 (19.3%)	290 (47.0%)	17 (2.8%)	1 (0.2%)	33 (5.3%)							(n/a)		24.3									$21,875
Derby High School	Public	9-12	75 Chatfield Street	Derby	06418	Naugatuck Valley Planning Region	Derby School District	No	No	No	Yes	(203) 736-5032	360	37	9.7	53.6%	85 (23.6%)	83 (23.1%)	162 (45.0%)	9 (2.5%)	0 (0.0%)	21 (5.8%)							(n/a)		28.4									$26,855
Shelton High School	Public	9-12	120 Meadow St.	Shelton	06484	Greater Bridgeport Planning Region	Shelton School District	No	No	No	Yes	(203) 922-3004	1,308	91	14.3	37.5%	706 (54.0%)	139 (10.6%)	336 (25.7%)	71 (5.4%)	0 (0.0%)	55 (4.2%)							(n/a)		63.0									$19,606
Amity Regional High School	Public	9-12	25 Newton Rd.	Woodbridge	06525	South Central Connecticut Planning Region	Regional School District 05	No	No	No	Yes	(203) 397-4830	1,347	122	11.0	16.8%	885 (65.7%)	49 (3.6%)	151 (11.2%)	205 (15.2%)	3 (0.2%)	51 (3.8%)	85.8	21^st of 135 public high schools	84.4%	85.4	24^th of 141 public high schools	83.0%	3		68.3	78.6	54.8							$23,412
Seymour High School	Public	9-12	2 Botsford Rd.	Seymour	06483	Naugatuck Valley Planning Region	Seymour School District	No	No	No	Yes	(203) 888-2561	604	51	11.8	50.8%	389 (64.4%)	48 (7.9%)	129 (21.4%)	18 (3.0%)	0 (0.0%)	19 (3.1%)	52.7	63^rd of 135 public high schools	53.3%	43.2	67^th of 141 public high schools	52.5%	4		47.6	53.8	35.2							$19,894
Oxford High School	Public	9-12	61 Quaker Farms Rd.	Oxford	06478	Naugatuck Valley Planning Region	Oxford School District	No	No	No	No	(203) 888-2468	476	47	10.1	17.9%	377 (79.2%)	16 (3.4%)	60 (12.6%)	12 (2.5%)	1 (0.2%)	10 (2.1%)							(n/a)		1116.0	73.1								$26,459
Common Ground High School	Public, Charter	9-12	358 Springside Ave.	New Haven	06515	South Central Connecticut Planning Region	Common Ground High School District	Yes	No	No	Yes	(203) 389-4333	221	22	9.9	64.3%	33 (14.9%)	72 (32.6%)	103 (46.6%)	4 (1.8%)	1 (0.5%)	7 (3.2%)							(n/a)		1095.0									$20,127
Platt Technical High School	Public	9-12	600 Orange Ave.	Milford	06461	South Central Connecticut Planning Region	Connecticut Technical Education and Career System	No	No	No	No	(203) 783-5300	749	62	12.0	47.1%	247 (33.0%)	123 (16.4%)	332 (44.3%)	7 (0.9%)	0 (0.0%)	38 (5.1%)	22.1	99^th of 135 public high schools	26.7%	10.7	129^th of 141 public high schools	8.5%	30		23.8		17.5							$31,070
Engineering - Science University Magnet School	Public, Magnet	6-12	500 Boston Post Road	West Haven	06516	South Central Connecticut Planning Region	New Haven School District	No	Yes	No	No	(475) 220-6000	608	52	11.6	50.8%	165 (27.1%)	177 (29.1%)	151 (24.8%)	64 (10.5%)	2 (0.3%)	49 (8.1%)	71.4	41^st of 135 public high schools	69.6%	61.8	55^th of 141 public high schools	61.0%	14	62.5	52.6	75.0	41.3	64.0	54.4	63.6	57.5	47.2	51.2	$21,492

Frequently Asked Questions about Emmett O'Brien Technical High School

What district is Emmett O'Brien Technical High School in?

Connecticut Technical Education and Career System

What is the racial makeup of Emmett O'Brien Technical High School?

Students at Emmett O'Brien Technical High School are 44% White, 37% Hispanic, 11% African American, 6% Two or more races.

Is Emmett O'Brien Technical High School a good school?

Emmett O'Brien Technical High School ranks in the bottom 24.4% of Connecticut high schools.

How many students attend Emmett O'Brien Technical High School?

In the 2024-25 school year, 618 students attended Emmett O'Brien Technical High School.

Rate Emmett O'Brien Technical High School!

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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 (2025)				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 (2025)	Statewide Rank (2025)	State Percentile (2025)	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 6th Grade	SBAC English Language Arts 7th Grade	SBAC English Language Arts 8th Grade	SBAC Mathematics 6th Grade	SBAC Mathematics 7th Grade	SBAC Mathematics 8th Grade	Total
Emmett O'Brien Technical High School	Public	9-12	141 Prindle Ave.	Ansonia	06401	Naugatuck Valley Planning Region	Connecticut Technical Education and Career System	No	No	No	No	(203) 732-1800	618	51	12.1	43.7%	275 (44.5%)	70 (11.3%)	230 (37.2%)	3 (0.5%)	2 (0.3%)	0 (0.0%)	35 (5.7%)	20.7	102^nd of 135 public high schools	24.4%					(n/a)		36.1	38.0	7.3							$29,511
Ansonia High School	Public	9-12	20 Pulaski Hwy.	Ansonia	06401	Naugatuck Valley Planning Region	Ansonia School District	No	No	No	No	(203) 736-5060	617	48	12.8	59.3%	157 (25.4%)	119 (19.3%)	290 (47.0%)	17 (2.8%)	1 (0.2%)	0 (0.0%)	33 (5.3%)								(n/a)		24.3									$21,875
Derby High School	Public	9-12	75 Chatfield Street	Derby	06418	Naugatuck Valley Planning Region	Derby School District	No	No	No	Yes	(203) 736-5032	360	37	9.7	53.6%	85 (23.6%)	83 (23.1%)	162 (45.0%)	9 (2.5%)	0 (0.0%)	0 (0.0%)	21 (5.8%)								(n/a)		28.4									$26,855
Shelton High School	Public	9-12	120 Meadow St.	Shelton	06484	Greater Bridgeport Planning Region	Shelton School District	No	No	No	Yes	(203) 922-3004	1,308	91	14.3	37.5%	706 (54.0%)	139 (10.6%)	336 (25.7%)	71 (5.4%)	0 (0.0%)	0 (0.0%)	55 (4.2%)								(n/a)		63.0									$19,606
Amity Regional High School	Public	9-12	25 Newton Rd.	Woodbridge	06525	South Central Connecticut Planning Region	Regional School District 05	No	No	No	Yes	(203) 397-4830	1,347	122	11.0	16.8%	885 (65.7%)	49 (3.6%)	151 (11.2%)	205 (15.2%)	3 (0.2%)	0 (0.0%)	51 (3.8%)	85.8	21^st of 135 public high schools	84.4%		85.4	24^th of 141 public high schools	83.0%	3		68.3	78.6	54.8							$23,412
Seymour High School	Public	9-12	2 Botsford Rd.	Seymour	06483	Naugatuck Valley Planning Region	Seymour School District	No	No	No	Yes	(203) 888-2561	604	51	11.8	50.8%	389 (64.4%)	48 (7.9%)	129 (21.4%)	18 (3.0%)	0 (0.0%)	0 (0.0%)	19 (3.1%)	52.7	63^rd of 135 public high schools	53.3%		43.2	67^th of 141 public high schools	52.5%	4		47.6	53.8	35.2							$19,894
Oxford High School	Public	9-12	61 Quaker Farms Rd.	Oxford	06478	Naugatuck Valley Planning Region	Oxford School District	No	No	No	No	(203) 888-2468	476	47	10.1	17.9%	377 (79.2%)	16 (3.4%)	60 (12.6%)	12 (2.5%)	1 (0.2%)	0 (0.0%)	10 (2.1%)								(n/a)		1116.0	73.1								$26,459
Common Ground High School	Public, Charter	9-12	358 Springside Ave.	New Haven	06515	South Central Connecticut Planning Region	Common Ground High School District	Yes	No	No	Yes	(203) 389-4333	221	22	9.9	64.3%	33 (14.9%)	72 (32.6%)	103 (46.6%)	4 (1.8%)	1 (0.5%)	0 (0.0%)	7 (3.2%)								(n/a)		1095.0									$20,127
Platt Technical High School	Public	9-12	600 Orange Ave.	Milford	06461	South Central Connecticut Planning Region	Connecticut Technical Education and Career System	No	No	No	No	(203) 783-5300	749	62	12.0	47.1%	247 (33.0%)	123 (16.4%)	332 (44.3%)	7 (0.9%)	0 (0.0%)	0 (0.0%)	38 (5.1%)	22.1	99^th of 135 public high schools	26.7%		10.7	129^th of 141 public high schools	8.5%	30		23.8		17.5							$31,070
Engineering - Science University Magnet School	Public, Magnet	6-12	500 Boston Post Road	West Haven	06516	South Central Connecticut Planning Region	New Haven School District	No	Yes	No	No	(475) 220-6000	608	52	11.6	50.8%	165 (27.1%)	177 (29.1%)	151 (24.8%)	64 (10.5%)	2 (0.3%)	0 (0.0%)	49 (8.1%)	71.4	41^st of 135 public high schools	69.6%		61.8	55^th of 141 public high schools	61.0%	14	62.5	52.6	75.0	41.3	64.0	54.4	63.6	57.5	47.2	51.2	$21,492