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SCHOOL COMMUNITY·CONNECTICUT TECHNICAL EDUCATION AND CAREER SYSTEM·NCES 090000201141

Emmett O'Brien Technical High School

141 Prindle Ave., Ansonia, CT 06401 · (203) 732-1800 · Naugatuck Valley Planning Region
GRADES 09–12HIGH21-SUBURBTITLE ICAREER AND TECHNICAL SCHOOL618 STUDENTS
Enrollment
618
High
DISTRICT 664 · STATE 788
Student : Teacher
12.2:1
51 FTE teachers
DISTRICT 11.2:1 · STATE 12.3:1
Free / Reduced Lunch
44%
270 students
DISTRICT 48% · STATE 44%
Community
5
0 members
Enrollment and student:teacher ratio compared against other high schools. Free/Reduced Lunch and demographics compared against all schools.

Enrollment by grade, 2024-25

GradeStudentsShare
Grade 917829%
Grade 1016427%
Grade 1112721%
Grade 1214924%
Student demographics
64%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 65% · STATE 67% · US 70%
White
27545%
DISTRICT 37% · STATE 46% · US 43%
Hispanic
23037%
DISTRICT 44% · STATE 32% · US 30%
Black
7011%
DISTRICT 12% · STATE 12% · US 15%
Asian
30%
DISTRICT 1% · STATE 5% · US 6%
Two+
356%
DISTRICT 5% · STATE 5% · US 5%
Native American
20%
DISTRICT 0% · STATE 0% · US 1%
Student head counts by race/ethnicity from federal NCES enrollment data. District, state, and US figures are each group's share of all public school students in that area (US excludes territories). Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
Male
34456%
Female
27144%

Discussions

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Where Emmett O'Brien Technical High School ranks

Among high schools
MeasureThis schoolIn ConnecticutIn Naugatuck Valley Planning Region
Enrollment
ranked largest first
618#113 of 201#15 of 24
Students per teacher
ranked fewest first
12.2:1#127 of 188#16 of 24
Diversity index
ranked most diverse first
64.4%#37 of 188#9 of 24
Enrollment change since 2017-18
ranked fastest growth first
+6.2%#43 of 63#7 of 9
Ranked against other public high schools. Online schools are left out of every list, and test-score lists leave out schools that serve specialized populations. Each rank links to the full list.

7-year change

SY 2017-18 vs SY 2024-25
Enrollment
618
+36 (+6%) vs 2017
Student : Teacher
12.2:1
was 11.1:1
% White
45%
was 57%
% Hispanic
37%
was 28%
% Black
11%
was 10%
% Asian
0%
was 1%
Source: NCES Common Core of Data

Enrollment and staffing by year

School yearStudentsTeachers (FTE)Students per teacherFree or reduced lunch
2024-2561850.712.2:144% (270)
2023-246525412.1:141% (267)
2022-2362750.212.5:139% (242)
2017-1858252.411.1:131% (179)
Source: NCES Common Core of Data. Rows are the federal collections on file for Emmett O'Brien Technical High School.

About Emmett O'Brien Technical High School

At 141 Prindle Ave. in Ansonia, Connecticut, Emmett O'Brien Technical High School operates as a small high school. The school enrolls 618 students, from grades 9 through 12. An average school in this group (high schools in Connecticut) has about 788 students.

Connecticut Technical Education and Career System has 17 schools; together they serve 11,296 students.

The most common group at Emmett O'Brien Technical High School is White students, at 45%. Enrollment also includes 37% Hispanic, 11% Black, and 6% multiracial. The school's White share is 20 points below the 64% share among Naugatuck Valley Planning Region residents. The school's diversity index is 64%, meaning two students picked at random have a 64% chance of belonging to different racial or ethnic groups.

Teachers at the school number 50.7 full-time equivalents, and the ratio is 12.2:1. For comparison, high schools in Connecticut average 12.3:1. Roughly 44% of the student body qualifies for free or reduced-price lunch.

According to the American Community Survey, in Naugatuck Valley Planning Region, the median household income is $86,191, roughly 34% of adults have a four-year degree or more, and the share of residents below the poverty line is 9%. There are 121 public schools in Naugatuck Valley Planning Region, enrolling about 59,861 students in all.

Nearest public school: Prendergast School, about 0.3 miles away. Within five miles are at least 8 other public schools.

Federal data place Emmett O'Brien Technical High School in the Suburb: Large locale, which means it is in a suburban area outside a principal city, within an urbanized area with a population of 250,000 or more.

Compared with 2017-18, the school had 36 more students in 2024-25. Over the same years, the White share dropped from 57% to 45%. In 2017-18, the student-to-teacher ratio was 11.1:1; by 2024-25 it was 12.2:1.

Questions about enrollment questions, class placement, and PTA news can be posted here. Questions from prospective families are welcome too.

Naugatuck Valley Planning Region at a glance

View full county profile
Population
454,969
Census ACS
Median income
$86,191
Household, ACS
Bachelor's+
34%
Adults 25+
Poverty rate
9%
Below federal line
Schools in county
121
59,861 students

Quick facts

School name
Emmett O'Brien Technical High School
District
Connecticut Technical Education and Career System
Address
141 Prindle Ave., Ansonia, CT 06401
Phone
(203) 732-1800
County
Naugatuck Valley Planning Region
Level
High
Grade range
09–12
Total enrollment
618
Teachers (FTE)
51
Student–teacher ratio
12.2:1
Free/Reduced lunch
270 (44%)
Locale
21-Suburb: Large
NCES ID
090000201141
Charter school
No
Virtual school
No

Related schools

Other schools in Connecticut Technical Education and Career System
Other schools in Ansonia
Nearby schools

Frequently asked questions

About Emmett O'Brien Technical High School
What is the total enrollment at Emmett O'Brien Technical High School?
Emmett O'Brien Technical High School enrolls approximately 618 students in grades 09-12.
What age range does Emmett O'Brien Technical High School serve?
Emmett O'Brien Technical High School serves students from grade 09 through grade 12.
What is the student-teacher ratio at Emmett O'Brien Technical High School?
The student-to-teacher ratio at Emmett O'Brien Technical High School is approximately 12.2:1 (51 FTE teachers).
How diverse is Emmett O'Brien Technical High School?
Emmett O'Brien Technical High School reports a student body of 45% White, 37% Hispanic, 11% Black, 0% Asian, 6% Two or more.
What district is Emmett O'Brien Technical High School in?
Emmett O'Brien Technical High School is part of Connecticut Technical Education and Career System.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.
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