List your school
Public SchoolHigh

Ansonia High School

20 Pulaski Hwy., Ansonia, CT 06401

CSchola Grade
Directions CallWebsite
Grades
9–12
High
Students
617
Enrolled 2024–25
Students per teacher
12.9 : 1
Full-time teachers
District
Ansonia School District
Naugatuck Valley Planning Region

Schola Grade C · Average

Letter grade (A–F) · compared with 194 Connecticut high schools · How we grade
Test scores27% proficient in math & reading
28thpercentile
Equity24% of low-income students proficient
42ndpercentile
Attendance21% chronically absent
45thpercentile
Graduation rate82% graduate in 4 years
16thpercentile
College readinessAt least 36% take AP, IB or dual-enrollment courses
82ndpercentile
Class size12.9 students per teacher
27thpercentile

Percentiles compare this school with other Connecticut high schools; the line marks the middle. Data: test scores 2021–22, graduation and absenteeism 2022–23 (U.S. Department of Education, EDFacts); coursework 2023–24 (Civil Rights Data Collection); staffing 2024–25 (NCES).

About Ansonia High School

Ansonia High School is a public high school in Ansonia, Connecticut, serving grades 9–12. It is part of Ansonia School District. The school is located in a large suburb in Naugatuck Valley Planning Region.

In the 2024–25 school year, 617 students were enrolled, with about 12.9 students for every full-time teacher. That ratio is larger than the typical Connecticut high school (11.1 students per teacher). Its Schola Grade is C (average), compared with 194 Connecticut high schools.

Grades & enrollment

Students per grade, 2024–25Grades 9–12

Location & nearby schools

20 Pulaski Hwy.
Ansonia, CT 06401
Open in Google Maps

School details

Type
Public School · What this means
Level
High
Grades offered
9–12
Enrollment (2024–25)
617 students
Students per teacher
12.9 to 1
AP courses offered
7
Charter school
No
Magnet school
No
Virtual learning
Offers virtual courses
Locale
Suburb — Large
School district
Ansonia School District
County
Naugatuck Valley Planning Region
NCES school ID
090006010002

Schools near Ansonia High School

All 6 schools in Ansonia →

School data comes from the U.S. Department of Education: the National Center for Education Statistics (NCES) Common Core of Data and EDGE school locations (2024–25) and Private School Survey (2023–24), the Civil Rights Data Collection (2023–24), and EDFacts (test results 2021–22; graduation and chronic absenteeism 2022–23), plus other public sources. Please contact the school to confirm enrollment, programs, and other details. How we source data.