Enrollment
617
Connecticut · 2024-25 NCES data
High school (grades 9-12) · Ansonia, CT
Ansonia High School
Federal NCES profile for Ansonia High School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 41/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 090006010002
👥 S:T ratio 48
📚 AP courses 40
🌟 Gifted program 30
🎓 Counselors 54
📋 Attendance 35
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Ansonia High School earns 41/100 on the Resource Investment Index, with class sizes larger than 73% of Connecticut schools.
- #1 of 5
- public schools in Ansonia · Resource Index
- 41
- Resource Index · Typical
- 12.9:1
- large classes for Connecticut
- 50.6%
- free-lunch eligible
Ansonia High School has class sizes larger than 73% of Connecticut schools. Computed live against every Connecticut school reporting to NCES.
By Resource Investment Index, Ansonia High School ranks #1 of 5 public schools in Ansonia, CT.
School address
District: Ansonia School District · Connecticut
NCES ID 090006010002 Verify on NCES CCD record →
Teachers (FTE)
48.0
Federal CCD staff survey
Students per teacher
12.9:1
vs 12.1:1 Connecticut avg
+7% vs state
Free-lunch eligible
50.6%
vs 36.4% Connecticut avg
+39% vs state
Student-teacher ratio in context
How Ansonia High School compares with Connecticut and U.S. medians
What stands out at Ansonia High School
Ansonia High School is a higher-need, mid-sized high school in Ansonia, Connecticut, enrolling 617 students.
Class loads run somewhat heavier than typical: 12.9:1 puts it in the larger third of Connecticut schools by student-teacher ratio.
Economic need runs somewhat above the state's typical profile, with 50.6% of students eligible for free meals.
Enrollment of 617 puts it in the larger third of Connecticut schools by headcount.
Its Resource Investment Index lands in the lower third of 1,003 scored Connecticut schools.
Against 157 statewide peers matched on enrollment and economic need, it ranks in the upper tier at #64.
Its student body is led by Hispanic or Latino (47%) and White (25%) (diversity index 67/100).
On the academic-pipeline side it reports 8 Advanced Placement courses.
Counselor coverage is strong, about 229 students per counselor, inside the American School Counselor Association's recommended 250:1.
Chronic absenteeism is elevated: 26.1% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
The federal civil-rights collection also records 8 expulsions at this campus for 2021-22.
Among Ansonia's high schools, it stands alongside Emmett O'brien Technical High School (618 students): Ansonia High School is smaller than that campus by headcount and runs heavier classes (12.9:1 vs 12.4:1).
Ansonia School District also operates Prendergast School (588 students) and Mead School (578 students) alongside Ansonia High School.
Sourced from NCES CCD, CRDC, and F-33 (federal records, not a quality verdict). How we source and compute this.
Source: National Center for Education Statistics Common Core of Data + CRDC + F-33 · 2024-25
How Ansonia High School compares
Ansonia High School on the metrics families compare, against Connecticut and U.S. means.
| Metric | This school | vs Connecticut | Connecticut avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 12.9:1 | ▲ 7% | 12.1:1 | 15.7:1 |
| Free-lunch eligible | 50.6% | ▲ 39% | 36.4% | 51.7% |
| Enrollment | 617 | top 21% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
12.9:1
Leaner classes than 68% of US schools, among the more generously staffed nationally.
617
Bigger than 74% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
50.6%
free-lunch eligible
- 39% above the Connecticut average of 36.4%
Above the 40% Title I schoolwide threshold; federal funds support the whole school, not individual students.
Staffing depth
12.9:1
students per teacher
- 7% above state mean
Top 73% in Connecticut - lower ratio than 27% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
26.1%
chronically absent (missed 10%+ of school days)
At or above 20%, the commonly used threshold for "high" chronic absenteeism, signaling significant barriers to regular attendance.
Funding equity
$20,353
per pupil, district-wide
- below Connecticut avg of $23,870
Well above the U.S. public-school average, reflecting substantially higher local or state investment per enrolled student.
Support staff
Counselors2.7 FTE
Per 229 students, the combined health-and-guidance staffing load for this school.
Discipline context
70
in-school suspensions + 34 out-of-school
Suspension rate: 11.3 per 100 students. Combined in-school and out-of-school rate: 16.9 per 100 students. Reported via the Civil Rights Data Collection. Includes 8 expulsions.
Overview
- Common Core of Data (June 2026): enrollment, staffing, and the student-teacher ratio above.
- Civil Rights Data Collection: discipline counts and program access (AP, gifted, special education).
- F-33 School District Finance Survey: the district-wide per-pupil spending figures below.
Three separate federal collections, each on its own reporting cadence - which is why this school's numbers line up on a consistent basis against every other school and state on this site, rather than mixing figures pulled from different survey years.
Student demographics
Hispanic or Latino 47.0%
White 25.4%
African American 19.3%
Two or More 5.3%
Asian 2.8%
American Indian / Alaska Native 0.2%
Largest group: Hispanic or Latino at 47.0% of enrollment.
Student-body diversity index 67.4/100
Simpson diversity index - at 67.4, Ansonia High School is more mixed than the Connecticut school average of 50.5.
Programs
AP courses offered 8
Funding & spending
District-wide per-pupil expenditure for Ansonia School District, which includes Ansonia High School.
$20,353
Per student
-15%
vs Connecticut
Avg $23,870
+23%
vs U.S.
Avg $16,593
Revenue mix
Local 33.7%
State 53.5%
Federal 12.7%
Source: NCES F-33 School District Finance Survey District-level finance · FY 2021-22 Per-pupil expenditure reflects the district-wide average. Individual school budgets are not reported at the federal level.
How Ansonia High School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Prendergast School | Similar size | Similar economic need | Higher S:T ratio |
| Mead School | Similar size | Similar economic need | Higher S:T ratio |
| Ansonia Middle School | Similar size | Similar economic need | Higher S:T ratio |
Comparisons are relative to Ansonia High School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 588
- Students per teacher
- 16.8:1
- Resource Index
- 30/100
- Enrollment
- 578
- Students per teacher
- 14.4:1
- Resource Index
- 31/100
- Enrollment
- 560
- Students per teacher
- 14.4:1
- Resource Index
- 28/100
Similar high schools in Ansonia
1 comparable high schools (grades 9-12) serving the same city.
Similar high schools statewide
Matched by enrollment size and by staffing ratio across all of Connecticut, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~617 students)
Next steps
Verify locally before acting on Ansonia High School's federal record.
- Compare Ansonia High School against another school. Compare schools
- Ansonia School District's spending and staffing shape this school. District profile
- Confirm current enrollment and boundaries with the school. Choosing guide
Federal record (CCD 2024-25, CRDC 2021-22) - PlainSchools assigns no subjective rating; the composite quality score is a transparent, reproducible index computed from this cited federal data.
Frequently asked questions about Ansonia High School
How many students attend Ansonia High School?
Ansonia High School has 617 students enrolled. It is a high school in Ansonia, CT.
What is the student-teacher ratio at Ansonia High School?
The student-teacher ratio at Ansonia High School is 12.9:1, which is 7% higher than the Connecticut average of 12.1:1 and 18% lower than the national average of 15.7:1.
What percentage of students receive free lunch at Ansonia High School?
50.6% of students at Ansonia High School are eligible for free lunch, compared to the Connecticut average of 36.4%.
What is the racial and ethnic makeup of Ansonia High School?
The largest demographic group at Ansonia High School is Hispanic or Latino at 47.0% of enrollment, in Ansonia, CT. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 67.4/100.
What is the Resource Investment Index for Ansonia High School?
Ansonia High School has a Resource Investment Index of 41/100 (typical reported resources relative to schools nationally) based on 5 factors: student-teacher ratio, AP course offerings, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Ansonia High School rank among public schools in Ansonia?
By Resource Investment Index, Ansonia High School ranks #1 of 5 public schools in Ansonia, CT. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all public schools in Ansonia on the city page.
Is Ansonia High School a good school?
Ansonia High School earns 41/100 on the Resource Investment Index, with class sizes larger than 73% of Connecticut schools. This is a resource snapshot, not an academic rating; see the Resource Investment Index question above for what the number does and doesn't measure.
What other schools are in Ansonia School District?
Besides Ansonia High School, Ansonia School District also operates Prendergast School (588 students), Mead School (578 students), and Ansonia Middle School (560 students). See the Ansonia School District district page for the complete list.
Related tools
Every figure on PlainSchools is rendered directly from the source NCES, CRDC and F-33 federal records, no number is typed in by an editor. Each school's figures reflect its most recent NCES/CRDC submission on file. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of June 2026.