Emmett O' Brien Technical High School, or O' Brien Tech, is a technical high school located in Ansonia, Connecticut. It is in the Connecticut Technical Education and Career System. O' Brien Tech receives students from many nearby towns.
Serving 618 students in grades 9-12, Emmett O'brien Technical High School ranks in the bottom 50% of all schools in Connecticut for overall test scores (math proficiency is bottom 50%, and reading proficiency is bottom 50%).
The percentage of students achieving proficiency in math is 10-14% (which is lower than the Connecticut state average of 41%). The percentage of students achieving proficiency in reading/language arts is 35-39% (which is lower than the Connecticut state average of 50%).
The student-teacher ratio of 12:1 is equal to the Connecticut state level of 12:1.
Minority enrollment is 55% of the student body (majority Hispanic), which is higher than the Connecticut state average of 54% (majority Hispanic).
Quick Facts (2026)
- School Type: Vocational school
- Grades: 9-12
- Enrollment: 618 students
- Student-Teacher Ratio: 12:1
- Minority Enrollment: 55%
- Graduation Rate: ≥95% (Top 10% in CT)
- Overall Testing Rank: Bottom 50%
- Math Proficiency: 10-14% (Btm 50%)
- Reading Proficiency: 35-39% (Btm 50%)
- Science Proficiency: 30-34% (Btm 50%)
- Source: National Center for Education Statistics (NCES), CT Dept. of Education
Top Rankings
Emmett O'brien Technical High School ranks among the top 20% of public schools in Connecticut for:
Category
Attribute
Graduation Rate
School Overview
Emmett O'brien Technical High School's student population of 618 students has declined by 10% over five school years.
The teacher population of 51 teachers has declined by 10% over five school years.
School Type
Grades Offered
Grades 9-12
(Supplemental Virtual)
(Supplemental Virtual)
Total Students
618 students
Total Classroom Teachers
51 teachers
School Calendar
School Rankings
Emmett O'brien Technical High School ranks within the bottom 50% of all 939 schools in Connecticut (based off of combined math and reading proficiency testing data).
The diversity score of Emmett O'brien Technical High School is 0.65, which is less than the diversity score at state average of 0.68. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#755 out of 939 schools
(Bottom 50%)
(Bottom 50%)
Math Test Scores (% Proficient)
10-14%
41%
Reading/Language Arts Test Scores (% Proficient)
35-39%
50%
Science Test Scores (% Proficient)
30-34%
47%
Student-Teacher Ratio
12:1
12:1
American Indian
n/a
n/a
Asian
1%
5%
Hispanic
37%
32%
Black
11%
12%
White
45%
46%
Hawaiian
n/a
n/a
Two or more races
6%
5%
All Ethnic Groups
Graduation Rate
≥95%
89%
Eligible for Free Lunch
35%
38%
Eligible for Reduced Lunch
9%
6%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), CT Dept. of Education
School Notes
- School Mascot: Condor
Frequently Asked Questions
What is Emmett O'brien Technical High School's ranking?
Emmett O'brien Technical High School is ranked #755 out of 939 schools, which ranks it among the bottom 50% of public schools in Connecticut.
What schools are Emmett O'brien Technical High School often compared to?
Emmett O'brien Technical High Schoolis often viewed alongside schools like Platt Technical High School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
10-14% of students have achieved math proficiency (compared to the 41% CT state average), while 35-39% of students have achieved reading proficiency (compared to the 50% CT state average).
What is the graduation rate of Emmett O'brien Technical High School?
The graduation rate of Emmett O'brien Technical High School is 95%, which is higher than the Connecticut state average of 89%.
How many students attend Emmett O'brien Technical High School?
618 students attend Emmett O'brien Technical High School.
What is the racial composition of the student body?
45% of Emmett O'brien Technical High School students are White, 37% of students are Hispanic, 11% of students are Black, 6% of students are Two or more races, and 1% of students are Asian.
What is the student-teacher ratio of Emmett O'brien Technical High School?
Emmett O'brien Technical High School has a student ration of 12:1, which is equal to the Connecticut state average of 12:1.
What grades does Emmett O'brien Technical High School offer ?
Emmett O'brien Technical High School offers enrollment in grades 9-12 (Supplemental Virtual).
What school district is Emmett O'brien Technical High School part of?
Emmett O'brien Technical High School is part of Connecticut Technical Education And Career System School District.
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