Enrollment
214
Maine · 2024-25 NCES data
High school (grades 9-12) · Sullivan, ME
Federal NCES profile for Sumner Memorial High School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 40/100.
The verdict
Sumner Memorial High School earns 40/100 on the Resource Investment Index, with class sizes near the Maine median.
Sumner Memorial High School has class sizes near the Maine median. Computed live against every Maine school reporting to NCES.
By Resource Investment Index, Sumner Memorial High School ranks #2 of 3 public schools in Sullivan, ME.
Enrollment
214
Maine · 2024-25 NCES data
Teachers (FTE)
21.0
Federal CCD staff survey
Students per teacher
10.2:1
vs 11.1:1 Maine avg
-8% vs state
Free-lunch eligible
32.6%
vs 34.0% Maine avg
-4% vs state
How Sumner Memorial High School compares with Maine and U.S. medians
At or below state median
10.2:1 - 0.9 below the Maine state median of 11.1:1, indicating smaller average class loads than typical schools in the state.
Sumner Memorial High School is a mid-sized high school in Sullivan, Maine, enrolling 214 students.
Class sizes run a bit leaner than typical: 10.2:1 puts it in the smaller third of Maine schools by student-teacher ratio.
Its free-meal eligibility rate of 32.6% lands close to the Maine typical range, neither a high- nor low-need campus by this measure.
With 214 students, its enrollment sits close to the Maine median campus size.
Its Resource Investment Index sits near the middle of the pack among 569 scored Maine schools.
Against 142 statewide peers matched on enrollment and economic need, it ranks in the upper tier at #53.
Its student body is predominantly White (86% of enrollment) (diversity index 25/100).
On the academic-pipeline side it reports 3 Advanced Placement courses.
Counselor coverage is strong, about 214 students per counselor, inside the American School Counselor Association's recommended 250:1.
Chronic absenteeism is elevated: 64.5% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
Rsu 24 also operates Mountain View Sch (152 students) and Sumner Middle Sch (147 students) alongside Sumner Memorial High 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
Sumner Memorial High 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 | 10.2:1 | ▼ 8% | 11.1:1 | 15.7:1 |
| Free-lunch eligible | 32.6% | ▼ 4% | 34.0% | 51.7% |
| Enrollment | 214 | top 56% | - | - |
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 86.4% of enrollment.
Simpson diversity index - at 24.5, Sumner Memorial High School is more mixed than the Maine school average of 20.6.
District-wide per-pupil expenditure for Rsu 24, which includes Sumner Memorial High 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 View Sch | Smaller | Similar economic need | Lower S:T ratio |
| Sumner Middle Sch | Smaller | Similar economic need | Similar S:T ratio |
| Ella Lewis Sch | Smaller | Higher economic need | Similar S:T ratio |
| Peninsula Sch | Smaller | Similar economic need | Lower S:T ratio |
| Cave Hill Sch | Smaller | Similar economic need | Lower S:T ratio |
Comparisons are relative to Sumner Memorial High 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 Sumner Memorial High 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.
Sumner Memorial High School has 214 students enrolled. It is a high school in Sullivan, ME.
The student-teacher ratio at Sumner Memorial High School is 10.2:1, which is 8% lower than the Maine average of 11.1:1 and 35% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
32.6% of students at Sumner Memorial High School are eligible for free lunch, compared to the Maine average of 34.0%.
The largest demographic group at Sumner Memorial High School is White at 86.4% of enrollment, in Sullivan, ME.
Sumner Memorial High School has a Resource Investment Index of 40/100 (typical reported resources relative to schools nationally) based on 5 factors: student-teacher ratio, AP course offerings, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
By Resource Investment Index, Sumner Memorial High School ranks #2 of 3 public schools in Sullivan, ME. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all public schools in Sullivan on the city page.
Sumner Memorial High School earns 40/100 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 Sumner Memorial High School, Rsu 24 also operates Mountain View Sch (152 students), Sumner Middle Sch (147 students), and Ella Lewis Sch (79 students). See the Rsu 24 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.
Published by
PlainSchools Editorial
Independent public-data reference that compiles, verifies, and contextualizes official datasets. We do not accept compensation from entities we cover, and every dataset cites its originating public source.
Last updated:
PlainSchools, “Sumner Memorial High School, Sullivan 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/sumner-memorial-high-school-me
You are welcome to quote these figures with attribution to PlainSchools and the underlying source. The URL above is stable.