Enrollment
378
Connecticut · 2024-25 NCES data
Other / mixed grade configuration · Windsor, CT
Oliver Ellsworth School
Federal NCES profile for Oliver Ellsworth School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 37/100.
2024-25 NCES dataOther / mixed grade configurationNCES 090522001092
👥 S:T ratio 60
🌟 Gifted program 30
📋 Attendance 21
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Oliver Ellsworth School earns 37/100 on the Resource Investment Index, with class sizes smaller than 81% of Connecticut schools. It is also more racially and ethnically mixed than most Connecticut schools.
- #3 of 3
- schools in Windsor · Resource Index
- 37
- Resource Index · Typical
- 9.9:1
- small classes for Connecticut
- 34.8%
- free-lunch eligible
Oliver Ellsworth School has class sizes smaller than 81% of Connecticut schools. Computed live against every Connecticut school reporting to NCES.
By Resource Investment Index, Oliver Ellsworth School ranks #3 of 3 schools in Windsor, CT.
School address
District: Windsor School District · Connecticut
NCES ID 090522001092 Verify on NCES CCD record →
Teachers (FTE)
38.0
Federal CCD staff survey
Students per teacher
9.9:1
vs 12.1:1 Connecticut avg
-18% vs state
Free-lunch eligible
34.8%
vs 36.4% Connecticut avg
-4% vs state
Student-teacher ratio in context
How Oliver Ellsworth School compares with Connecticut and U.S. medians
What stands out at Oliver Ellsworth School
Oliver Ellsworth School is a mid-sized combined-grade school in Windsor, Connecticut, enrolling 378 students.
Class sizes run a bit leaner than typical: 9.9:1 puts it in the smaller third of Connecticut schools by student-teacher ratio.
Its free-meal eligibility rate of 34.8% lands close to the Connecticut typical range, neither a high- nor low-need campus by this measure.
With 378 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.
Among 239 similarly sized, similarly resourced-need Connecticut schools statewide, it ranks #214, in the lower tier once campus size and economic need are matched.
Its student body is led by African American (36%) and Hispanic or Latino (27%), more mixed than most schools in the state (diversity index 73/100).
Chronic absenteeism is elevated: 31.7% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
Among Windsor's public schools, it stands alongside Academy of Aerospace and Engineering (767 students): Oliver Ellsworth School is smaller than that campus by headcount and runs leaner classes (9.9:1 vs 13:1).
Windsor School District also operates Windsor High School (1,095 students) and Sage Park Middle School (719 students) alongside Oliver Ellsworth 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 Oliver Ellsworth School compares
Oliver Ellsworth 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 | 9.9:1 | ▼ 18% | 12.1:1 | 15.7:1 |
| Free-lunch eligible | 34.8% | ▼ 4% | 36.4% | 51.7% |
| Enrollment | 378 | top 57% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
9.9:1
Leaner classes than 89% of US schools, among the more generously staffed nationally.
378
Bigger than 44% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
34.8%
free-lunch eligible
- 4% below the Connecticut average of 36.4%
Below the 40% Title I threshold; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
9.9:1
students per teacher
- 18% below state mean
Top 19% in Connecticut - lower ratio than 81% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
31.7%
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
$27,518
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
0
in-school suspensions + 0 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 0.0 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
African American 36.0%
Hispanic or Latino 27.2%
White 23.3%
Two or More 9.5%
Asian 4.0%
Largest group: African American at 36.0% of enrollment.
Student-body diversity index 73.2/100
Simpson diversity index - at 73.2, Oliver Ellsworth School is more mixed than the Connecticut school average of 50.5.
Programs
Funding & spending
District-wide per-pupil expenditure for Windsor School District, which includes Oliver Ellsworth School.
$27,518
Per student
+15%
vs Connecticut
Avg $23,870
+66%
vs U.S.
Avg $16,593
Revenue mix
Local 64.9%
State 27.9%
Federal 7.2%
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 Oliver Ellsworth School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Windsor High School | Larger | Similar economic need | Similar S:T ratio |
| Sage Park Middle School | Larger | Similar economic need | Similar S:T ratio |
| John F. Kennedy School | Similar size | Similar economic need | Higher S:T ratio |
| Poquonock Elementary School | Similar size | Similar economic need | Similar S:T ratio |
| Clover Street School | Smaller | Similar economic need | Similar S:T ratio |
Comparisons are relative to Oliver Ellsworth School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,095
- Students per teacher
- 9.3:1
- Resource Index
- 55/100
- Enrollment
- 719
- Students per teacher
- 10.1:1
- Resource Index
- 54/100
- Enrollment
- 412
- Students per teacher
- 11.4:1
- Resource Index
- 61/100
- Enrollment
- 328
- Students per teacher
- 11.3:1
- Resource Index
- 44/100
- Enrollment
- 276
- Students per teacher
- 9.2:1
- Resource Index
- 58/100
Similar other schools in Windsor
2 comparable other schools (grades Mixed) serving the same city.
Similar other 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 (~378 students)
Similar student-teacher ratio (~9.9:1)
Next steps
Verify locally before acting on Oliver Ellsworth School's federal record.
- Compare Oliver Ellsworth School against another school. Compare schools
- Windsor 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 Oliver Ellsworth School
How many students attend Oliver Ellsworth School?
Oliver Ellsworth School has 378 students enrolled. It is a public school in Windsor, CT.
What is the student-teacher ratio at Oliver Ellsworth School?
The student-teacher ratio at Oliver Ellsworth School is 9.9:1, which is 18% lower than the Connecticut average of 12.1:1 and 37% 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 Oliver Ellsworth School?
34.8% of students at Oliver Ellsworth School are eligible for free lunch, compared to the Connecticut average of 36.4%.
What is the racial and ethnic makeup of Oliver Ellsworth School?
The largest demographic group at Oliver Ellsworth School is African American at 36.0% of enrollment, in Windsor, CT. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 73.2/100.
What is the Resource Investment Index for Oliver Ellsworth School?
Oliver Ellsworth School has a Resource Investment Index of 37/100 (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 Oliver Ellsworth School rank among schools in Windsor?
By Resource Investment Index, Oliver Ellsworth School ranks #3 of 3 schools in Windsor, CT. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all schools in Windsor on the city page.
Is Oliver Ellsworth School a good school?
Oliver Ellsworth School earns 37/100 on the Resource Investment Index, with class sizes smaller than 81% of Connecticut schools. It is also more racially and ethnically mixed than most 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 Windsor School District?
Besides Oliver Ellsworth School, Windsor School District also operates Windsor High School (1,095 students), Sage Park Middle School (719 students), and John F. Kennedy School (412 students). See the Windsor 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.