Enrollment
470
Maine · 2024-25 NCES data
Middle school (grades 6-8) · Portland, ME
Federal NCES profile for Lyman Moore Middle School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 47/100.
The verdict
Lyman Moore Middle School earns 47/100 on the Resource Investment Index, with class sizes smaller than 79% of Maine schools. It is also more racially and ethnically mixed than most Maine schools.
Lyman Moore Middle School has class sizes smaller than 79% of Maine schools. Computed live against every Maine school reporting to NCES.
By Resource Investment Index, Lyman Moore Middle School ranks #3 of 3 middle schools in Portland, ME.
NCES ID 230993000278 Verify on NCES CCD record →
Enrollment
470
Maine · 2024-25 NCES data
Teachers (FTE)
51.0
Federal CCD staff survey
Students per teacher
9.2:1
vs 11.1:1 Maine avg
-17% vs state
Free-lunch eligible
37.6%
vs 34.0% Maine avg
+11% vs state
How Lyman Moore Middle School compares with Maine and U.S. medians
At or below state median
9.2:1 - 1.9 below the Maine state median of 11.1:1, indicating smaller average class loads than typical schools in the state.
Lyman Moore Middle School is a mid-sized middle school in Portland, Maine, enrolling 470 students.
Class sizes run a bit leaner than typical: 9.2:1 puts it in the smaller third of Maine schools by student-teacher ratio.
Economic need runs somewhat above the state's typical profile, with 37.6% of students eligible for free meals.
Enrollment of 470 puts it in the larger third of Maine schools by headcount.
Its Resource Investment Index sits near the middle of the pack among 569 scored Maine schools.
Against 114 statewide peers matched on enrollment and economic need, it ranks in the upper tier at #35.
Its student body is led by White (51%) and African American (26%), more mixed than most schools in the state (diversity index 65/100).
Counselor coverage is strong, about 235 students per counselor, inside the American School Counselor Association's recommended 250:1.
Chronic absenteeism is elevated: 39.4% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
Among Portland's middle schools, it stands alongside King Middle School (434 students): Lyman Moore Middle School is larger than that campus by headcount and runs leaner classes (9.2:1 vs 9.9:1).
Portland Public Schools also operates Portland High School (912 students) and Deering High School (850 students) alongside Lyman Moore Middle 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
Lyman Moore Middle 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 | 9.2:1 | ▼ 17% | 11.1:1 | 15.7:1 |
| Free-lunch eligible | 37.6% | ▲ 11% | 34.0% | 51.7% |
| Enrollment | 470 | top 18% | - | - |
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 51.3% of enrollment.
Simpson diversity index - at 65.1, Lyman Moore Middle School is more mixed than the Maine school average of 20.6.
District-wide per-pupil expenditure for Portland Public Schools, which includes Lyman Moore Middle 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 |
|---|---|---|---|
| Portland High School | Larger | Similar economic need | Higher S:T ratio |
| Deering High School | Larger | Higher economic need | Higher S:T ratio |
| Harrison Lyseth Elem School | Similar size | Similar economic need | Higher S:T ratio |
| Amanda C Rowe School | Similar size | Similar economic need | Higher S:T ratio |
| Howard C Reiche Community Sch | Similar size | Higher economic need | Higher S:T ratio |
Comparisons are relative to Lyman Moore Middle School's own figures; each column derives from NCES Common Core of Data.
2 comparable middle schools (grades 6-8) serving the same city.
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 Lyman Moore Middle 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.
Lyman Moore Middle School has 470 students enrolled. It is a middle school in Portland, ME.
The student-teacher ratio at Lyman Moore Middle School is 9.2:1, which is 17% lower than the Maine average of 11.1:1 and 41% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
37.6% of students at Lyman Moore Middle School are eligible for free lunch, compared to the Maine average of 34.0%.
The largest demographic group at Lyman Moore Middle School is White at 51.3% of enrollment, in Portland, ME. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 65.1/100.
Lyman Moore Middle School has a Resource Investment Index of 47/100 (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, Lyman Moore Middle School ranks #3 of 3 middle schools in Portland, ME. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all middle schools in Portland on the city page.
Lyman Moore Middle School earns 47/100 on the Resource Investment Index, with class sizes smaller than 79% of Maine schools. It is also more racially and ethnically mixed than most 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 Lyman Moore Middle School, Portland Public Schools also operates Portland High School (912 students), Deering High School (850 students), and Harrison Lyseth Elem School (489 students). See the Portland Public Schools 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, “Lyman Moore Middle School, Portland 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/lyman-moore-middle-school-me
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