Enrollment
497
Connecticut · 2024-25 NCES data
Elementary school (grades K-5) · Avon, CT
Thompson Brook School
Federal NCES profile for Thompson Brook School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 38/100.
2024-25 NCES dataElementary school (grades K-5)NCES 090012001367
👥 S:T ratio 45
🌟 Gifted program 30
🎓 Counselors 1
📋 Attendance 76
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Thompson Brook School earns 38/100 on the Resource Investment Index, with class sizes larger than 83% of Connecticut schools.
- #3 of 3
- elementary schools in Avon · Resource Index
- 38
- Resource Index · Typical
- 13.8:1
- large classes for Connecticut
- 9.0%
- free-lunch eligible
Thompson Brook School has class sizes larger than 83% of Connecticut schools. Computed live against every Connecticut school reporting to NCES.
By Resource Investment Index, Thompson Brook School ranks #3 of 3 elementary schools in Avon, CT.
School address
District: Avon School District · Connecticut
NCES ID 090012001367 Verify on NCES CCD record →
Teachers (FTE)
36.0
Federal CCD staff survey
Students per teacher
13.8:1
vs 12.1:1 Connecticut avg
+14% vs state
Free-lunch eligible
9.0%
vs 36.4% Connecticut avg
-75% vs state
Student-teacher ratio in context
How Thompson Brook School compares with Connecticut and U.S. medians
What stands out at Thompson Brook School
Thompson Brook School is a lower-poverty, mid-sized elementary school in Avon, Connecticut, enrolling 497 students.
Class loads run somewhat heavier than typical: 13.8:1 puts it in the larger third of Connecticut schools by student-teacher ratio.
Comparatively few students face economic hardship here, 9.0% free-meal eligibility runs 75% below the Connecticut average.
Enrollment of 497 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.
Among 253 similarly sized, similarly resourced-need Connecticut schools statewide, it ranks #247, in the lower tier once campus size and economic need are matched.
Its student body is led by White (62%) and Asian (19%) (diversity index 57/100).
Counselor access is stretched at roughly 497 students per counselor, well above the ASCA-recommended 250:1 ceiling.
Attendance holds up well here: only 9.5% of students were chronically absent, below the typical post-pandemic national figure.
Among Avon's elementary schools, it stands alongside Pine Grove School (613 students): Thompson Brook School is smaller than that campus by headcount and runs leaner classes (13.8:1 vs 14.3:1).
Avon School District also operates Avon High School (946 students) and Pine Grove School (613 students) alongside Thompson Brook 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 Thompson Brook School compares
Thompson Brook 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 | 13.8:1 | ▲ 14% | 12.1:1 | 15.7:1 |
| Free-lunch eligible | 9.0% | ▼ 75% | 36.4% | 51.7% |
| Enrollment | 497 | top 33% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
13.8:1
Leaner classes than 59% of US schools, a middle-of-the-pack class size.
497
Bigger than 61% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
9.0%
free-lunch eligible
- 75% below the Connecticut average of 36.4%
Below the 40% Title I threshold, among the lower-need profiles in the state; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
13.8:1
students per teacher
- 14% above state mean
Top 83% in Connecticut - lower ratio than 17% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
9.5%
chronically absent (missed 10%+ of school days)
In the 5-10% range, close to the pre-pandemic national baseline.
Funding equity
$22,893
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
Counselors1.0 FTE
Per 497 students, the combined health-and-guidance staffing load for this school.
Discipline context
18
in-school suspensions + 2 out-of-school
Suspension rate: 3.6 per 100 students. Combined in-school and out-of-school rate: 4.0 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
White 61.6%
Asian 19.1%
Hispanic or Latino 7.8%
Two or More 5.8%
African American 5.4%
Native Hawaiian / Pacific Islander 0.2%
Largest group: White at 61.6% of enrollment.
Student-body diversity index 57.2/100
Simpson diversity index - at 57.2, Thompson Brook School is more mixed than the Connecticut school average of 50.5.
Programs
Funding & spending
District-wide per-pupil expenditure for Avon School District, which includes Thompson Brook School.
$22,893
Per student
-4%
vs Connecticut
Avg $23,870
+38%
vs U.S.
Avg $16,593
Revenue mix
Local 79.7%
State 16.7%
Federal 3.6%
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 Thompson Brook School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Avon High School | Larger | Similar economic need | Lower S:T ratio |
| Pine Grove School | Similar size | Similar economic need | Similar S:T ratio |
| Avon Middle School | Similar size | Similar economic need | Lower S:T ratio |
| Roaring Brook School | Similar size | Similar economic need | Similar S:T ratio |
Comparisons are relative to Thompson Brook School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 946
- Students per teacher
- 11.1:1
- Resource Index
- 54/100
- Enrollment
- 613
- Students per teacher
- 14.3:1
- Resource Index
- 48/100
- Enrollment
- 461
- Students per teacher
- 10.7:1
- Resource Index
- 53/100
- Enrollment
- 461
- Students per teacher
- 12.5:1
- Resource Index
- 50/100
Similar elementary schools in Avon
2 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 (~497 students)
Similar student-teacher ratio (~13.8:1)
Next steps
Verify locally before acting on Thompson Brook School's federal record.
- Compare Thompson Brook School against another school. Compare schools
- Avon 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 Thompson Brook School
How many students attend Thompson Brook School?
Thompson Brook School has 497 students enrolled. It is an elementary school in Avon, CT.
What is the student-teacher ratio at Thompson Brook School?
The student-teacher ratio at Thompson Brook School is 13.8:1, which is 14% higher than the Connecticut average of 12.1:1 and 12% lower than the national average of 15.7:1.
What percentage of students receive free lunch at Thompson Brook School?
9.0% of students at Thompson Brook School are eligible for free lunch, compared to the Connecticut average of 36.4%.
What is the racial and ethnic makeup of Thompson Brook School?
The largest demographic group at Thompson Brook School is White at 61.6% of enrollment, in Avon, CT. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 57.2/100.
What is the Resource Investment Index for Thompson Brook School?
Thompson Brook School has a Resource Investment Index of 38/100 (typical 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 Thompson Brook School rank among elementary schools in Avon?
By Resource Investment Index, Thompson Brook School ranks #3 of 3 elementary schools in Avon, CT. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all elementary schools in Avon on the city page.
Is Thompson Brook School a good school?
Thompson Brook School earns 38/100 on the Resource Investment Index, with class sizes larger than 83% 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 Avon School District?
Besides Thompson Brook School, Avon School District also operates Avon High School (946 students), Pine Grove School (613 students), and Avon Middle School (461 students). See the Avon 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.