Enrollment
664
South Carolina · 2024-25 NCES data
Other / mixed grade configuration · Aiken, SC
Federal NCES profile for Millbrook Elementary, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 41/100.
The verdict
Millbrook Elementary earns 41/100 on the Resource Investment Index, with class sizes near the South Carolina median.
Millbrook Elementary has class sizes near the South Carolina median. Computed live against every South Carolina school reporting to NCES.
By Resource Investment Index, Millbrook Elementary ranks #2 of 9 schools in Aiken, SC.
NCES ID 450072000030 Verify on NCES CCD record →
Enrollment
664
South Carolina · 2024-25 NCES data
Teachers (FTE)
43.0
Federal CCD staff survey
Students per teacher
15.4:1
vs 14.3:1 South Carolina avg
+8% vs state
Free-lunch eligible
35.4%
vs 74.0% South Carolina avg
-52% vs state
How Millbrook Elementary compares with South Carolina and U.S. medians
Slightly above state median
15.4:1 - 1.1 above the South Carolina state median of 14.3:1, indicating larger average class loads than typical schools in the state.
Millbrook Elementary is a mid-sized combined-grade school in Aiken, South Carolina, enrolling 664 students.
Class loads run somewhat heavier than typical: 15.4:1 puts it in the larger third of South Carolina schools by student-teacher ratio.
Comparatively few students face economic hardship here, 35.4% free-meal eligibility runs 52% below the South Carolina average.
With 664 students, its enrollment sits close to the South Carolina median campus size.
Its Resource Investment Index lands in the lower third of 1,214 scored South Carolina schools.
Among 123 similarly sized, similarly resourced-need South Carolina schools statewide, it ranks #105, in the lower tier once campus size and economic need are matched.
Its student body is led by White (40%) and African American (35%) (diversity index 69/100).
Counselor access is stretched at roughly 664 students per counselor, well above the ASCA-recommended 250:1 ceiling.
17.3% of students were chronically absent in the 2021-22 collection, in line with the post-pandemic national range.
The surrounding Aiken 01 spends $11,604 per pupil, 20% below the South Carolina average, a leaner-resourced district than most.
Its district draws 15.3% of revenue from federal sources, an above-typical federal share that tends to track a higher-need student population.
Among Aiken's public schools, it stands alongside Horse Creek Academy (1,392 students): Millbrook Elementary is smaller than that campus by headcount and runs heavier classes (15.4:1 vs 14.7:1).
Aiken 01 also operates North Augusta High (1,645 students) and Midland Valley High (1,558 students) alongside Millbrook Elementary.
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
Millbrook Elementary on the metrics families compare, against South Carolina and U.S. means.
| Metric | This school | vs South Carolina | South Carolina avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 15.4:1 | ▲ 8% | 14.3:1 | 15.7:1 |
| Free-lunch eligible | 35.4% | ▼ 52% | 74.0% | 51.7% |
| Enrollment | 664 | 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 40.2% of enrollment.
Simpson diversity index - at 69.0, Millbrook Elementary is more mixed than the South Carolina school average of 52.7.
District-wide per-pupil expenditure for Aiken 01, which includes Millbrook Elementary.
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 |
|---|---|---|---|
| North Augusta High | Larger | Similar economic need | Higher S:T ratio |
| Midland Valley High | Larger | Higher economic need | Higher S:T ratio |
| South Aiken High | Larger | Similar economic need | Higher S:T ratio |
| Aiken High | Larger | Higher economic need | Similar S:T ratio |
| Silver Bluff High | Similar size | Higher economic need | Higher S:T ratio |
Comparisons are relative to Millbrook Elementary's own figures; each column derives from NCES Common Core of Data.
6 comparable other schools (grades Mixed) serving the same city.
Matched by enrollment size and by staffing ratio across all of South Carolina, not just this city - a different peer set than the local comparisons above.
Next steps
Verify locally before acting on Millbrook Elementary'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.
Millbrook Elementary has 664 students enrolled. It is a public school in Aiken, SC.
The student-teacher ratio at Millbrook Elementary is 15.4:1, which is 8% higher than the South Carolina average of 14.3:1 and 2% lower than the national average of 15.7:1.
35.4% of students at Millbrook Elementary are eligible for free lunch, compared to the South Carolina average of 74.0%.
The largest demographic group at Millbrook Elementary is White at 40.2% of enrollment, in Aiken, SC. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 69.0/100.
Millbrook Elementary has a Resource Investment Index of 41/100 (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, Millbrook Elementary ranks #2 of 9 schools in Aiken, SC. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all schools in Aiken on the city page.
Millbrook Elementary earns 41/100 on the Resource Investment Index, with class sizes near the South Carolina 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 Millbrook Elementary, Aiken 01 also operates North Augusta High (1,645 students), Midland Valley High (1,558 students), and South Aiken High (1,349 students). See the Aiken 01 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, “Millbrook Elementary, Aiken SC.” 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/millbrook-elementary-sc
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