Enrollment
322
Connecticut · 2024-25 NCES data
Elementary school (grades K-5) · Derby, CT
Irving School
Federal NCES profile for Irving School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 45/100.
2024-25 NCES dataElementary school (grades K-5)NCES 090111000178
👥 S:T ratio 66
🌟 Gifted program 30
📋 Attendance 40
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Irving School earns 45/100 on the Resource Investment Index, with class sizes smaller than 94% of Connecticut schools.
- #2 of 5
- public schools in Derby · Resource Index
- 45
- Resource Index · Typical
- 8.5:1
- small classes for Connecticut
- 58.8%
- free-lunch eligible
Irving School has class sizes smaller than 94% of Connecticut schools. Computed live against every Connecticut school reporting to NCES.
By Resource Investment Index, Irving School ranks #2 of 5 public schools in Derby, CT.
School address
District: Derby School District · Connecticut
NCES ID 090111000178 Verify on NCES CCD record →
Teachers (FTE)
38.0
Federal CCD staff survey
Students per teacher
8.5:1
vs 12.1:1 Connecticut avg
-30% vs state
Free-lunch eligible
58.8%
vs 36.4% Connecticut avg
+62% vs state
Student-teacher ratio in context
How Irving School compares with Connecticut and U.S. medians
What stands out at Irving School
Irving School is a higher-need, mid-sized elementary school in Derby, Connecticut, enrolling 322 students.
Classes run notably small here: at 8.5:1, Irving School is leaner than roughly 94% of Connecticut schools and 30% 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 58.8% of students eligible for free meals.
Enrollment of 322 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 125 statewide peers matched on enrollment and economic need, it ranks in the upper tier at #42.
Its student body is led by Hispanic or Latino (50%) and African American (22%) (diversity index 66/100).
Attendance runs somewhat below the norm, with 23.9% of students chronically absent per the 2021-22 civil-rights collection.
Among Derby's elementary schools, it stands alongside Bradley School (244 students): Irving School is larger than that campus by headcount and runs leaner classes (8.5:1 vs 10.6:1).
Derby School District also operates Derby High School (360 students) and Derby Middle School (300 students) alongside Irving 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 Irving School compares
Irving 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 | 8.5:1 | ▼ 30% | 12.1:1 | 15.7:1 |
| Free-lunch eligible | 58.8% | ▲ 62% | 36.4% | 51.7% |
| Enrollment | 322 | top 70% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
8.5:1
Leaner classes than 94% of US schools, among the more generously staffed nationally.
322
Bigger than 36% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
58.8%
free-lunch eligible
- 62% 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
8.5:1
students per teacher
- 30% below state mean
Top 6% in Connecticut - lower ratio than 94% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
23.9%
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
Counselors0.0 FTE
Student-support staffing from the Civil Rights Data Collection.
Discipline context
11
in-school suspensions + 19 out-of-school
Suspension rate: 3.4 per 100 students. Combined in-school and out-of-school rate: 9.3 per 100 students. Reported via the Civil Rights Data Collection.
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 50.3%
African American 22.4%
White 18.0%
Two or More 8.1%
Asian 1.2%
Largest group: Hispanic or Latino at 50.3% of enrollment.
Student-body diversity index 65.8/100
Simpson diversity index - at 65.8, Irving 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 Irving 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 Irving School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Derby High School | Similar size | Lower economic need | Similar S:T ratio |
| Derby Middle School | Similar size | Lower economic need | Higher S:T ratio |
| Bradley School | Similar size | Lower economic need | Higher S:T ratio |
| Little Raiders University | Smaller | Lower economic need | Higher S:T ratio |
Comparisons are relative to Irving 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
- 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 elementary schools in Derby
1 comparable elementary schools (grades K-5) serving the same city.
Similar elementary 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 (~322 students)
Similar student-teacher ratio (~8.5:1)
Next steps
Verify locally before acting on Irving School's federal record.
- Compare Irving 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 Irving School
How many students attend Irving School?
Irving School has 322 students enrolled. It is an elementary school in Derby, CT.
What is the student-teacher ratio at Irving School?
The student-teacher ratio at Irving School is 8.5:1, which is 30% lower than the Connecticut average of 12.1:1 and 46% 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 Irving School?
58.8% of students at Irving School are eligible for free lunch, compared to the Connecticut average of 36.4%.
What is the racial and ethnic makeup of Irving School?
The largest demographic group at Irving School is Hispanic or Latino at 50.3% of enrollment, in Derby, CT. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 65.8/100.
What is the Resource Investment Index for Irving School?
Irving School has a Resource Investment Index of 45/100 (typical reported resources relative to schools nationally) based on 3 factors: student-teacher ratio, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Irving School rank among public schools in Derby?
By Resource Investment Index, Irving School ranks #2 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 Irving School a good school?
Irving School earns 45/100 on the Resource Investment Index, with class sizes smaller than 94% 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 Irving School, Derby School District also operates Derby High School (360 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.