Enrollment
360
Connecticut · 2024-25 NCES data
High school (grades 9-12) · Derby, CT
Derby High School
Federal NCES profile for Derby High School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 42/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 090111000175
👥 S:T ratio 62
📚 AP courses 40
🌟 Gifted program 30
🎓 Counselors 76
📋 Attendance 0
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Derby High School earns 42/100 on the Resource Investment Index, with class sizes smaller than 85% of Connecticut schools.
- #4 of 5
- public schools in Derby · Resource Index
- 42
- Resource Index · Typical
- 9.5:1
- small classes for Connecticut
- 43.4%
- free-lunch eligible
Derby High School has class sizes smaller than 85% of Connecticut schools. Computed live against every Connecticut school reporting to NCES.
By Resource Investment Index, Derby High School ranks #4 of 5 public schools in Derby, CT.
School address
District: Derby School District · Connecticut
NCES ID 090111000175 Verify on NCES CCD record →
Teachers (FTE)
38.0
Federal CCD staff survey
Students per teacher
9.5:1
vs 12.1:1 Connecticut avg
-21% vs state
Free-lunch eligible
43.4%
vs 36.4% Connecticut avg
+19% vs state
Student-teacher ratio in context
How Derby High School compares with Connecticut and U.S. medians
What stands out at Derby High School
Derby High School is a mid-sized high school in Derby, Connecticut, enrolling 360 students.
Classes run notably small here: at 9.5:1, Derby High School is leaner than roughly 85% of Connecticut schools and 21% under the state's 12.1:1 norm, more adult attention per pupil than most peers.
Economic need runs somewhat above the state's typical profile, with 43.4% of students eligible for free meals.
With 360 students, its enrollment sits close to the Connecticut median campus size.
Its Resource Investment Index lands in the lower third of 1,003 scored Connecticut schools.
Against 188 statewide peers matched on enrollment and economic need, it ranks mid-pack at #114.
Its student body is led by Hispanic or Latino (45%) and White (24%) (diversity index 68/100).
On the academic-pipeline side it reports 8 Advanced Placement courses.
Counselor coverage is strong, about 120 students per counselor, inside the American School Counselor Association's recommended 250:1.
Chronic absenteeism is elevated: 41.7% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
Discipline events run high: 101 in- and out-of-school suspensions were reported for 360 students in the 2021-22 Civil Rights Data Collection.
The federal civil-rights collection also records 3 expulsions at this campus for 2021-22.
Derby School District also operates Irving School (322 students) and Derby Middle School (300 students) alongside Derby 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 Derby High School compares
Derby 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 | 9.5:1 | ▼ 21% | 12.1:1 | 15.7:1 |
| Free-lunch eligible | 43.4% | ▲ 19% | 36.4% | 51.7% |
| Enrollment | 360 | top 61% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
9.5:1
Leaner classes than 91% of US schools, among the more generously staffed nationally.
360
Bigger than 41% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
43.4%
free-lunch eligible
- 19% 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
9.5:1
students per teacher
- 21% below state mean
Top 15% in Connecticut - lower ratio than 85% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
41.7%
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
$26,432
per pupil, district-wide
- above 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
Counselors3.0 FTE
Per 120 students, the combined health-and-guidance staffing load for this school.
Discipline context
42
in-school suspensions + 59 out-of-school
Suspension rate: 11.7 per 100 students. Combined in-school and out-of-school rate: 28.1 per 100 students. Reported via the Civil Rights Data Collection. Includes 3 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 45.0%
White 23.6%
African American 23.1%
Two or More 5.8%
Asian 2.5%
Largest group: Hispanic or Latino at 45.0% of enrollment.
Student-body diversity index 68.4/100
Simpson diversity index - at 68.4, Derby 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 Derby School District, which includes Derby High School.
$26,432
Per student
+11%
vs Connecticut
Avg $23,870
+59%
vs U.S.
Avg $16,593
Revenue mix
Local 47.4%
State 40.8%
Federal 11.8%
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 Derby High School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Irving School | Similar size | Higher economic need | Similar S:T ratio |
| Derby Middle School | Similar size | Similar economic need | Similar S:T ratio |
| Bradley School | Smaller | Similar economic need | Similar S:T ratio |
| Little Raiders University | Smaller | Similar economic need | Higher S:T ratio |
Comparisons are relative to Derby High School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 322
- Students per teacher
- 8.5:1
- Resource Index
- 45/100
- Enrollment
- 300
- Students per teacher
- 10:1
- Resource Index
- 50/100
- Enrollment
- 244
- Students per teacher
- 10.6:1
- Resource Index
- 45/100
- Enrollment
- 63
- Students per teacher
- 15.8:1
- Resource Index
- 33/100
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 (~360 students)
Similar student-teacher ratio (~9.5:1)
Next steps
Verify locally before acting on Derby High School's federal record.
- Compare Derby High School against another school. Compare schools
- Derby 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 Derby High School
How many students attend Derby High School?
Derby High School has 360 students enrolled. It is a high school in Derby, CT.
What is the student-teacher ratio at Derby High School?
The student-teacher ratio at Derby High School is 9.5:1, which is 21% lower than the Connecticut average of 12.1:1 and 39% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
What percentage of students receive free lunch at Derby High School?
43.4% of students at Derby High School are eligible for free lunch, compared to the Connecticut average of 36.4%.
What is the racial and ethnic makeup of Derby High School?
The largest demographic group at Derby High School is Hispanic or Latino at 45.0% of enrollment, in Derby, CT. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 68.4/100.
What is the Resource Investment Index for Derby High School?
Derby High School has a Resource Investment Index of 42/100 (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 Derby High School rank among public schools in Derby?
By Resource Investment Index, Derby High School ranks #4 of 5 public schools in Derby, 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 Derby on the city page.
Is Derby High School a good school?
Derby High School earns 42/100 on the Resource Investment Index, with class sizes smaller than 85% 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 Derby School District?
Besides Derby High School, Derby School District also operates Irving School (322 students), Derby Middle School (300 students), and Bradley School (244 students). See the Derby 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.