Enrollment
297
Maine · 2024-25 NCES data
Other / mixed grade configuration · Sumner, ME
Federal NCES profile for Hartford-Sumner Elementary School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 42/100.
The verdict
Hartford-Sumner Elementary School earns 42/100 on the Resource Investment Index, with class sizes near the Maine median.
Hartford-Sumner Elementary School has class sizes near the Maine median. Computed live against every Maine school reporting to NCES.
Enrollment
297
Maine · 2024-25 NCES data
Teachers (FTE)
28.0
Federal CCD staff survey
Students per teacher
10.6:1
vs 11.1:1 Maine avg
-5% vs state
Free-lunch eligible
42.9%
vs 34.0% Maine avg
+26% vs state
How Hartford-Sumner Elementary School compares with Maine and U.S. medians
At or below state median
10.6:1 - 0.5 below the Maine state median of 11.1:1, indicating smaller average class loads than typical schools in the state.
Hartford-Sumner Elementary School is a mid-sized combined-grade school in Sumner, Maine, enrolling 297 students.
At 10.6:1, its student-teacher ratio sits close to the Maine median, within a few percentage points of the 11.1:1 state norm, neither notably crowded nor notably small.
Economic need runs somewhat above the state's typical profile, with 42.9% of students eligible for free meals.
With 297 students, its enrollment sits close to the Maine median campus size.
Its Resource Investment Index lands in the lower third of 569 scored Maine schools.
Against 130 statewide peers matched on enrollment and economic need, it ranks mid-pack at #83.
Its student body is predominantly White (97% of enrollment) (diversity index 5/100).
Counselor coverage runs a bit thin, about 297 students per counselor, somewhat past the ASCA-recommended 250:1 benchmark.
Chronic absenteeism is elevated: 41.4% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
Its district draws 25.0% of revenue from federal sources, an above-typical federal share that tends to track a higher-need student population.
Rsu 10 also operates Mountain Valley Middle School (376 students) and Mountain Valley High School (369 students) alongside Hartford-Sumner Elementary 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
Hartford-Sumner Elementary School on the metrics families compare, against Maine and U.S. means.
| Metric | This school | vs Maine | Maine avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 10.6:1 | ▼ 5% | 11.1:1 | 15.7:1 |
| Free-lunch eligible | 42.9% | ▲ 26% | 34.0% | 51.7% |
| Enrollment | 297 | top 39% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
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.
Largest group: White at 97.3% of enrollment.
Simpson diversity index - at 5.3, Hartford-Sumner Elementary School is less mixed than the Maine school average of 20.6.
District-wide per-pupil expenditure for Rsu 10, which includes Hartford-Sumner Elementary School.
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.
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Mountain Valley Middle School | Larger | Higher economic need | Higher S:T ratio |
| Mountain Valley High School | Similar size | Higher economic need | Higher S:T ratio |
| Meroby Elementary School | Similar size | Higher economic need | Similar S:T ratio |
| Buckfield Jr-Sr High School | Similar size | Similar economic need | Similar S:T ratio |
| Rumford Elementary | Smaller | Higher economic need | Lower S:T ratio |
Comparisons are relative to Hartford-Sumner Elementary School's own figures; each column derives from NCES Common Core of Data.
Matched by enrollment size and by staffing ratio across all of Maine, not just this city - a different peer set than the local comparisons above.
Next steps
Verify locally before acting on Hartford-Sumner Elementary School's federal record.
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.
Hartford-Sumner Elementary School has 297 students enrolled. It is a public school in Sumner, ME.
The student-teacher ratio at Hartford-Sumner Elementary School is 10.6:1, which is 5% lower than the Maine average of 11.1:1 and 32% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
42.9% of students at Hartford-Sumner Elementary School are eligible for free lunch, compared to the Maine average of 34.0%.
The largest demographic group at Hartford-Sumner Elementary School is White at 97.3% of enrollment, in Sumner, ME.
Hartford-Sumner Elementary School has a Resource Investment Index of 42/100 (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).
Hartford-Sumner Elementary School earns 42/100 on the Resource Investment Index, with class sizes near the Maine median. 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.
Besides Hartford-Sumner Elementary School, Rsu 10 also operates Mountain Valley Middle School (376 students), Mountain Valley High School (369 students), and Meroby Elementary School (256 students). See the Rsu 10 district page for the complete list.
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.
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PlainSchools, “Hartford-Sumner Elementary School, Sumner ME.” Compiled from NCES Common Core of Data, Civil Rights Data Collection, and the NCES F-33 finance survey; data as of June 2026. https://plainschools.com/schools/hartford-sumner-elementary-school-me
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