Enrollment
222
Maine · 2024-25 NCES data
Elementary school (grades K-5) · Oakland, ME
Federal NCES profile for Williams Elementary School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 50/100.
The verdict
Williams Elementary School earns 50/100 on the Resource Investment Index, with class sizes larger than 76% of Maine schools.
Williams Elementary School has class sizes larger than 76% of Maine schools. Computed live against every Maine school reporting to NCES.
By Resource Investment Index, Williams Elementary School ranks #1 of 4 public schools in Oakland, ME.
Enrollment
222
Maine · 2024-25 NCES data
Teachers (FTE)
18.0
Federal CCD staff survey
Students per teacher
12.3:1
vs 11.1:1 Maine avg
+11% vs state
Free-lunch eligible
31.7%
vs 34.0% Maine avg
-7% vs state
How Williams Elementary School compares with Maine and U.S. medians
Slightly above state median
12.3:1 - 1.2 above the Maine state median of 11.1:1, indicating larger average class loads than typical schools in the state.
Williams Elementary School is a mid-sized elementary school in Oakland, Maine, enrolling 222 students.
Class loads run somewhat heavier than typical: 12.3:1 puts it in the larger third of Maine schools by student-teacher ratio.
Its free-meal eligibility rate of 31.7% lands close to the Maine typical range, neither a high- nor low-need campus by this measure.
With 222 students, its enrollment sits close to the Maine median campus size.
Its Resource Investment Index lands in the upper third of 569 scored Maine schools.
Against 149 statewide peers matched on enrollment and economic need, it ranks in the upper tier at #39.
Its student body is predominantly White (91% of enrollment) (diversity index 17/100).
Chronic absenteeism is elevated: 27.9% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
The surrounding Rsu 18 spends $14,717 per pupil, 27% below the Maine average, a leaner-resourced district than most.
Rsu 18 also operates Messalonskee High School (695 students) and Messalonskee Middle School (495 students) alongside Williams 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
Williams 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 | 12.3:1 | ▲ 11% | 11.1:1 | 15.7:1 |
| Free-lunch eligible | 31.7% | ▼ 7% | 34.0% | 51.7% |
| Enrollment | 222 | top 54% | - | - |
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 91.0% of enrollment.
Simpson diversity index - at 16.9, Williams Elementary School is less mixed than the Maine school average of 20.6.
District-wide per-pupil expenditure for Rsu 18, which includes Williams 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 |
|---|---|---|---|
| Messalonskee High School | Larger | Lower economic need | Similar S:T ratio |
| Messalonskee Middle School | Larger | Similar economic need | Similar S:T ratio |
| James H Bean School | Larger | Lower economic need | Higher S:T ratio |
| China Primary School | Similar size | Similar economic need | Similar S:T ratio |
| Belgrade Central School | Similar size | Similar economic need | Similar S:T ratio |
Comparisons are relative to Williams 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 Williams 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.
Williams Elementary School has 222 students enrolled. It is an elementary school in Oakland, ME.
The student-teacher ratio at Williams Elementary School is 12.3:1, which is 11% higher than the Maine average of 11.1:1 and 22% lower than the national average of 15.7:1.
31.7% of students at Williams Elementary School are eligible for free lunch, compared to the Maine average of 34.0%.
The largest demographic group at Williams Elementary School is White at 91.0% of enrollment, in Oakland, ME.
Williams Elementary School has a Resource Investment Index of 50/100 (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).
By Resource Investment Index, Williams Elementary School ranks #1 of 4 public schools in Oakland, 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 Oakland on the city page.
Williams Elementary School earns 50/100 on the Resource Investment Index, with class sizes larger than 76% of Maine 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.
Besides Williams Elementary School, Rsu 18 also operates Messalonskee High School (695 students), Messalonskee Middle School (495 students), and James H Bean School (300 students). See the Rsu 18 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, “Williams Elementary School, Oakland 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/williams-elementary-school-me
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