Ansonia High School
🇺🇸 Official data · 2025Ansonia, Connecticut 06401 · Ansonia School District
#146 of 180 high schools in Connecticut
#12510 of 16,910 nationally
About Ansonia High School
Ansonia High School is a public high located in Ansonia, in the Ansonia School District school district of Connecticut, United States. It caters for Grades 9–12. In 2025 it enrolled 617 students. Traditional public schools run by a school district; free to attend.
Its Success Index (US) is 33.6 out of 100, placing it in the lower 50% of high schools in United States and 146th of 180 ranked high schools in Connecticut. Its strongest component is students per teacher (67th percentile), and its weakest is math proficiency (15th percentile).
Other published figures: enrollment 617.
There are 4 schools in Ansonia; Ansonia High School ranks 2nd of 4 scored schools there.
Success Index (US) breakdown
Each component is a percentile against high schools across United States.
- Math proficiency (30%)17%
- Reading proficiency (30%)42%
- Community advantage (fewer free/reduced-price lunch) (25%)59.3%
- Students per teacher (15%)12.9
The Success Index (US) summarises published data about a school community. It is not a measure of teaching quality. Read the methodology.
Published measures
All figures published for Ansonia High School by the official sources.
- Enrollment
- 617
- Students enrolled in the latest NCES directory year.
- Free/reduced-price lunch
- 59.3%
- Share of students eligible for free or reduced-price lunch.
- Students per teacher
- 12.9
- Enrollment divided by FTE teachers; not class size.
- Reading proficiency
- 42%
- Share of tested students proficient or above (all students, all grades).
- Math proficiency
- 17%
- Share of tested students proficient or above (all students, all grades).
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Schools near Ansonia High School
Closest schools by straight-line distance, with their Success Index (US).
Prendergast School
Ansonia · Public elementary · Grades PK–5
588 students · 791 m away
Bradley School
Derby · Public elementary · Grades K–5
244 students · 970 m away
Mead School
Ansonia · Public elementary · Grades PK–5
578 students · 1.7 km away
Irving School
Derby · Public elementary · Grades K–5
322 students · 1.9 km away
Ansonia Middle School
Ansonia · Public middle · Grades 6–8
560 students · 2.2 km away
Derby High School
Derby · Public high · Grades 9–12
360 students · 2.8 km away
Little Raiders University
Derby · Public other · Grades PK–PK
63 students · 2.8 km away
Derby Middle School
Derby · Public middle · Grades 6–8
300 students · 2.9 km away
Perry Hill Elementary School
Shelton · Public middle · Grades 5–6
711 students · 3.4 km away
Sunnyside School
Shelton · Public elementary · Grades PK–4
229 students · 4.0 km away
Similar schools
Public high schools in Connecticut with a comparable Enrollment.
Lewis S. Mills High School
Burlington · Public high · Grades 9–12
614 students
Wolcott High School
Wolcott · Public high · Grades 9–12
611 students
Hill Regional Career High School
New Haven · Public high · Grades 9–12
625 students
Engineering - Science University Magnet School
West Haven · Public high · Grades 6–12
608 students
Griswold High School
Griswold · Public high · Grades 9–12
606 students
New London High School
New London · Public high · Grades 9–12
605 students
Frequently asked questions
Is Ansonia High School a good school?
Ansonia High School has a Success Index (US) of 33.6 out of 100 (Lower 50% of high schools in United States) and ranks #146 of 180 in Connecticut. The index summarises published data about the school community and, where available, attainment; it does not measure teaching quality, so visit the school and ask about support at your child's level.
Where does Ansonia High School rank in Connecticut?
Ansonia High School ranks #146 of 180 high schools in Connecticut and #12510 of 16,910 nationally on the Success Index (US) (2025 data).
How many students attend Ansonia High School?
Ansonia High School had 617 students in 2025.
Is Ansonia High School a elementary school or a high school?
Ansonia High School is classified as a high covering Grades 9–12. It is a public school.
What other schools are near Ansonia High School?
There are 10 schools within 15 km of Ansonia High School; they are listed on this page with their Success Index (US) and distance, and can be compared side by side.