Enrollment
458
Connecticut · 2024-25 NCES data
Other / mixed grade configuration · Marlborough, CT
Elmer Thienes-Mary Hall Elementary School
Federal NCES profile for Elmer Thienes-Mary Hall Elementary School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 67/100.
2024-25 NCES dataOther / mixed grade configurationNCES 090237000437
👥 S:T ratio 49
🌟 Gifted program 70
📋 Attendance 83
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Elmer Thienes-Mary Hall Elementary School earns 67/100 on the Resource Investment Index, with class sizes larger than 71% of Connecticut schools.
- 67
- Resource Index · Higher
- 12.7:1
- large classes for Connecticut
- 12.1%
- free-lunch eligible
- 458
- students enrolled
Elmer Thienes-Mary Hall Elementary School has class sizes larger than 71% of Connecticut schools. Computed live against every Connecticut school reporting to NCES.
School address
District: Marlborough School District · Connecticut
NCES ID 090237000437 Verify on NCES CCD record →
Teachers (FTE)
36.0
Federal CCD staff survey
Students per teacher
12.7:1
vs 12.1:1 Connecticut avg
+5% vs state
Free-lunch eligible
12.1%
vs 36.4% Connecticut avg
-67% vs state
Student-teacher ratio in context
How Elmer Thienes-Mary Hall Elementary School compares with Connecticut and U.S. medians
What stands out at Elmer Thienes-Mary Hall Elementary School
Elmer Thienes-Mary Hall Elementary School is a lower-poverty, mid-sized combined-grade school in Marlborough, Connecticut, enrolling 458 students.
Class loads run somewhat heavier than typical: 12.7:1 puts it in the larger third of Connecticut schools by student-teacher ratio.
Economic need runs somewhat below the state's typical profile, with 12.1% of students eligible for free meals.
With 458 students, its enrollment sits close to the Connecticut median campus size.
Its Resource Investment Index outscores 94% of the 1,003 Connecticut schools with a score on record, a top-tier result on this measure.
Among 269 similarly sized, similarly resourced-need Connecticut schools statewide, it ranks #25, a top-tier result once campus size and economic need are matched.
Its student body is predominantly White (85% of enrollment) (diversity index 27/100).
Attendance holds up well here: only 7.0% of students were chronically absent, below the typical post-pandemic national figure.
Marlborough School District operates only this one school, so Elmer Thienes-Mary Hall Elementary School has no district-mates to compare against locally.
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 Elmer Thienes-Mary Hall Elementary School compares
Elmer Thienes-Mary Hall Elementary 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 | 12.7:1 | ▲ 5% | 12.1:1 | 15.7:1 |
| Free-lunch eligible | 12.1% | ▼ 67% | 36.4% | 51.7% |
| Enrollment | 458 | top 40% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
12.7:1
Leaner classes than 69% of US schools, among the more generously staffed nationally.
458
Bigger than 56% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
12.1%
free-lunch eligible
- 67% 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
12.7:1
students per teacher
- 5% above state mean
Top 71% in Connecticut - lower ratio than 29% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
7.0%
chronically absent (missed 10%+ of school days)
In the 5-10% range, close to the pre-pandemic national baseline.
Funding equity
$21,911
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
Counselors0.0 FTE
Student-support staffing from the Civil Rights Data Collection.
Discipline context
2
in-school suspensions + 0 out-of-school
Suspension rate: 0.4 per 100 students. Combined in-school and out-of-school rate: 0.4 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 84.7%
Hispanic or Latino 9.4%
Asian 2.6%
Two or More 2.2%
African American 0.7%
American Indian / Alaska Native 0.4%
Largest group: White at 84.7% of enrollment.
Student-body diversity index 27.3/100
Simpson diversity index - at 27.3, Elmer Thienes-Mary Hall Elementary School is less mixed than the Connecticut school average of 50.5.
Programs
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for Marlborough School District, which includes Elmer Thienes-Mary Hall Elementary School.
$21,911
Per student
-8%
vs Connecticut
Avg $23,870
+32%
vs U.S.
Avg $16,593
Revenue mix
Local 48.7%
State 45.9%
Federal 5.4%
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.
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 (~458 students)
Next steps
Verify locally before acting on Elmer Thienes-Mary Hall Elementary School's federal record.
- Compare Elmer Thienes-Mary Hall Elementary School against another school. Compare schools
- Marlborough 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 Elmer Thienes-Mary Hall Elementary School
How many students attend Elmer Thienes-Mary Hall Elementary School?
Elmer Thienes-Mary Hall Elementary School has 458 students enrolled. It is a public school in Marlborough, CT.
What is the student-teacher ratio at Elmer Thienes-Mary Hall Elementary School?
The student-teacher ratio at Elmer Thienes-Mary Hall Elementary School is 12.7:1, which is 5% higher than the Connecticut average of 12.1:1 and 19% lower than the national average of 15.7:1.
What percentage of students receive free lunch at Elmer Thienes-Mary Hall Elementary School?
12.1% of students at Elmer Thienes-Mary Hall Elementary School are eligible for free lunch, compared to the Connecticut average of 36.4%.
What is the racial and ethnic makeup of Elmer Thienes-Mary Hall Elementary School?
The largest demographic group at Elmer Thienes-Mary Hall Elementary School is White at 84.7% of enrollment, in Marlborough, CT.
What is the Resource Investment Index for Elmer Thienes-Mary Hall Elementary School?
Elmer Thienes-Mary Hall Elementary School has a Resource Investment Index of 67/100 (higher 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).
Is Elmer Thienes-Mary Hall Elementary School a good school?
Elmer Thienes-Mary Hall Elementary School earns 67/100 on the Resource Investment Index, with class sizes larger than 71% 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 Marlborough School District?
None reported; Marlborough School District operates only Elmer Thienes-Mary Hall Elementary School as a public school district in NCES's records.
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.