Enrollment
300
Connecticut · 2024-25 NCES data
Middle school (grades 6-8) · Derby, CT
Derby Middle School
Federal NCES profile for Derby Middle School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 50/100.
2024-25 NCES dataMiddle school (grades 6-8)NCES 090111001578
👥 S:T ratio 60
🌟 Gifted program 30
🎓 Counselors 70
📋 Attendance 40
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Derby Middle School earns 50/100 on the Resource Investment Index, with class sizes smaller than 80% of Connecticut schools.
- #1 of 5
- public schools in Derby · Resource Index
- 50
- Resource Index · Higher
- 10:1
- small classes for Connecticut
- 48.5%
- free-lunch eligible
Derby Middle School has class sizes smaller than 80% of Connecticut schools. Computed live against every Connecticut school reporting to NCES.
By Resource Investment Index, Derby Middle School ranks #1 of 5 public schools in Derby, CT.
School address
District: Derby School District · Connecticut
NCES ID 090111001578 Verify on NCES CCD record →
Teachers (FTE)
30.0
Federal CCD staff survey
Students per teacher
10:1
vs 12.1:1 Connecticut avg
-17% vs state
Free-lunch eligible
48.5%
vs 36.4% Connecticut avg
+33% vs state
Student-teacher ratio in context
How Derby Middle School compares with Connecticut and U.S. medians
What stands out at Derby Middle School
Derby Middle School is a mid-sized middle school in Derby, Connecticut, enrolling 300 students.
Class sizes run a bit leaner than typical: 10:1 puts it in the smaller third of Connecticut schools by student-teacher ratio.
Economic need runs somewhat above the state's typical profile, with 48.5% of students eligible for free meals.
Enrollment of 300 puts it in the smaller third of Connecticut schools by headcount.
Its Resource Investment Index sits near the middle of the pack among 1,003 scored Connecticut schools.
Against 147 statewide peers matched on enrollment and economic need, it ranks in the upper tier at #41.
Its student body is led by Hispanic or Latino (48%) and White (26%) (diversity index 66/100).
Counselor coverage is strong, about 150 students per counselor, inside the American School Counselor Association's recommended 250:1.
Attendance runs somewhat below the norm, with 24.0% of students chronically absent per the 2021-22 civil-rights collection.
Discipline events run high: 69 in- and out-of-school suspensions were reported for 300 students in the 2021-22 Civil Rights Data Collection.
The federal civil-rights collection also records 5 expulsions at this campus for 2021-22.
Derby School District also operates Derby High School (360 students) and Irving School (322 students) alongside Derby Middle 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 Middle School compares
Derby Middle 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 | 10:1 | ▼ 17% | 12.1:1 | 15.7:1 |
| Free-lunch eligible | 48.5% | ▲ 33% | 36.4% | 51.7% |
| Enrollment | 300 | top 76% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
10:1
Leaner classes than 89% of US schools, among the more generously staffed nationally.
300
Bigger than 32% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
48.5%
free-lunch eligible
- 33% 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
10:1
students per teacher
- 17% below state mean
Top 20% in Connecticut - lower ratio than 80% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
24.0%
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
Counselors2.0 FTE
Per 150 students, the combined health-and-guidance staffing load for this school.
Discipline context
43
in-school suspensions + 26 out-of-school
Suspension rate: 14.3 per 100 students. Combined in-school and out-of-school rate: 23.0 per 100 students. Reported via the Civil Rights Data Collection. Includes 5 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 47.7%
White 25.7%
African American 21.3%
Two or More 4.3%
Asian 1.0%
Largest group: Hispanic or Latino at 47.7% of enrollment.
Student-body diversity index 65.9/100
Simpson diversity index - at 65.9, Derby Middle School is more mixed than the Connecticut school average of 50.5.
Programs
Funding & spending
District-wide per-pupil expenditure for Derby School District, which includes Derby Middle 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 Middle School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Derby High School | Similar size | Similar economic need | Similar S:T ratio |
| Irving School | Similar size | Higher economic need | Lower S:T ratio |
| Bradley School | Similar size | Similar economic need | Similar S:T ratio |
| Little Raiders University | Smaller | Similar economic need | Higher S:T ratio |
Comparisons are relative to Derby Middle School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 360
- Students per teacher
- 9.5:1
- Resource Index
- 42/100
- Enrollment
- 322
- Students per teacher
- 8.5:1
- Resource Index
- 45/100
- 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 middle 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 (~300 students)
Similar student-teacher ratio (~10:1)
Next steps
Verify locally before acting on Derby Middle School's federal record.
- Compare Derby Middle 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 Middle School
How many students attend Derby Middle School?
Derby Middle School has 300 students enrolled. It is a middle school in Derby, CT.
What is the student-teacher ratio at Derby Middle School?
The student-teacher ratio at Derby Middle School is 10:1, which is 17% lower than the Connecticut average of 12.1:1 and 36% 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 Middle School?
48.5% of students at Derby Middle School are eligible for free lunch, compared to the Connecticut average of 36.4%.
What is the racial and ethnic makeup of Derby Middle School?
The largest demographic group at Derby Middle School is Hispanic or Latino at 47.7% of enrollment, in Derby, CT. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 65.9/100.
What is the Resource Investment Index for Derby Middle School?
Derby Middle School has a Resource Investment Index of 50/100 (higher reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Derby Middle School rank among public schools in Derby?
By Resource Investment Index, Derby Middle School ranks #1 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 Middle School a good school?
Derby Middle School earns 50/100 on the Resource Investment Index, with class sizes smaller than 80% 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 Middle School, Derby School District also operates Derby High School (360 students), Irving School (322 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.