Enrollment
308
Maine · 2024-25 NCES data
Elementary school (grades K-5) · Kennebunk, ME
Federal NCES profile for Sea Road School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 39/100.
The verdict
Sea Road School earns 39/100 on the Resource Investment Index, with class sizes larger than 76% of Maine schools.
Sea Road School has class sizes larger than 76% of Maine schools. Computed live against every Maine school reporting to NCES.
By Resource Investment Index, Sea Road School ranks #4 of 4 public schools in Kennebunk, ME.
Enrollment
308
Maine · 2024-25 NCES data
Teachers (FTE)
25.0
Federal CCD staff survey
Students per teacher
12.3:1
vs 11.1:1 Maine avg
+11% vs state
Free-lunch eligible
9.6%
vs 34.0% Maine avg
-72% vs state
How Sea Road 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.
Sea Road School is a lower-poverty, mid-sized elementary school in Kennebunk, Maine, enrolling 308 students.
Class loads run somewhat heavier than typical: 12.3:1 puts it in the larger third of Maine schools by student-teacher ratio.
Comparatively few students face economic hardship here, 9.6% free-meal eligibility runs 72% below the Maine average.
With 308 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.
Among 76 similarly sized, similarly resourced-need Maine schools statewide, it ranks #62, in the lower tier once campus size and economic need are matched.
Its student body is predominantly White (87% of enrollment) (diversity index 24/100).
Counselor coverage runs a bit thin, about 308 students per counselor, somewhat past the ASCA-recommended 250:1 benchmark.
Attendance runs somewhat below the norm, with 24.7% of students chronically absent per the 2021-22 civil-rights collection.
Rsu 21 also operates Kennebunk High School (683 students) and Middle School of the Kennebunks (470 students) alongside Sea Road 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
Sea Road 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 | 9.6% | ▼ 72% | 34.0% | 51.7% |
| Enrollment | 308 | top 36% | - | - |
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 87.0% of enrollment.
Simpson diversity index - at 23.6, Sea Road School is more mixed than the Maine school average of 20.6.
District-wide per-pupil expenditure for Rsu 21, which includes Sea Road 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 |
|---|---|---|---|
| Kennebunk High School | Larger | Similar economic need | Similar S:T ratio |
| Middle School of the Kennebunks | Larger | Similar economic need | Lower S:T ratio |
| Kennebunk Elementary School | Similar size | Similar economic need | Similar S:T ratio |
| Mildred L Day School | Smaller | Similar economic need | Similar S:T ratio |
| Kennebunkport Consolidated Sch | Smaller | Similar economic need | Similar S:T ratio |
Comparisons are relative to Sea Road 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 Sea Road 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.
Sea Road School has 308 students enrolled. It is an elementary school in Kennebunk, ME.
The student-teacher ratio at Sea Road 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.
9.6% of students at Sea Road School are eligible for free lunch, compared to the Maine average of 34.0%.
The largest demographic group at Sea Road School is White at 87.0% of enrollment, in Kennebunk, ME.
Sea Road School has a Resource Investment Index of 39/100 (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).
By Resource Investment Index, Sea Road School ranks #4 of 4 public schools in Kennebunk, 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 Kennebunk on the city page.
Sea Road School earns 39/100 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 Sea Road School, Rsu 21 also operates Kennebunk High School (683 students), Middle School of the Kennebunks (470 students), and Kennebunk Elementary School (378 students). See the Rsu 21 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, “Sea Road School, Kennebunk 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/sea-road-school-me
You are welcome to quote these figures with attribution to PlainSchools and the underlying source. The URL above is stable.