Enrollment
415
Maryland · 2024-25 NCES data
Middle school (grades 6-8) · Columbia, MD
Federal NCES profile for Oakland Mills Middle, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 47/100.
The verdict
Oakland Mills Middle earns 47/100 on the Resource Investment Index, with class sizes smaller than 93% of Maryland schools. It is also more racially and ethnically mixed than most Maryland schools.
Oakland Mills Middle has class sizes smaller than 93% of Maryland schools. Computed live against every Maryland school reporting to NCES.
By Resource Investment Index, Oakland Mills Middle ranks #1 of 4 middle schools in Columbia, MD.
NCES ID 240042000746 Verify on NCES CCD record →
Enrollment
415
Maryland · 2024-25 NCES data
Teachers (FTE)
41.0
Federal CCD staff survey
Students per teacher
10.1:1
vs 14.5:1 Maryland avg
-30% vs state
Free-lunch eligible
45.9%
vs 49.0% Maryland avg
-6% vs state
How Oakland Mills Middle compares with Maryland and U.S. medians
Smaller classes than state median
10.1:1 - 4.4 below the Maryland state median of 14.5:1, indicating smaller average class loads than typical schools in the state.
Oakland Mills Middle is a mid-sized middle school in Columbia, Maryland, enrolling 415 students.
Classes run notably small here: at 10.1:1, Oakland Mills Middle is leaner than roughly 93% of Maryland schools and 30% under the state's 14.5:1 norm, more adult attention per pupil than most peers.
Its free-meal eligibility rate of 45.9% lands close to the Maryland typical range, neither a high- nor low-need campus by this measure.
Enrollment of 415 puts it in the smaller third of Maryland schools by headcount.
Its Resource Investment Index lands in the upper third of 1,382 scored Maryland schools.
Against 245 statewide peers matched on enrollment and economic need, it ranks in the upper tier at #51.
Its student body is led by African American (33%) and Hispanic or Latino (32%), more mixed than most schools in the state (diversity index 74/100).
Counselor coverage is strong, about 208 students per counselor, inside the American School Counselor Association's recommended 250:1.
Chronic absenteeism is elevated: 39.5% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
Among Columbia's middle schools, it stands alongside Wilde Lake Middle (643 students): Oakland Mills Middle is smaller than that campus by headcount and runs leaner classes (10.1:1 vs 12.9:1).
Howard County Public Schools also operates Marriotts Ridge High (1,741 students) and Reservoir High (1,597 students) alongside Oakland Mills Middle.
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
Oakland Mills Middle on the metrics families compare, against Maryland and U.S. means.
| Metric | This school | vs Maryland | Maryland avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 10.1:1 | ▼ 30% | 14.5:1 | 15.7:1 |
| Free-lunch eligible | 45.9% | ▼ 6% | 49.0% | 51.7% |
| Enrollment | 415 | top 70% | - | - |
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: African American at 32.6% of enrollment.
Simpson diversity index - at 73.7, Oakland Mills Middle is more mixed than the Maryland school average of 52.3.
District-wide per-pupil expenditure for Howard County Public Schools, which includes Oakland Mills Middle.
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 |
|---|---|---|---|
| Marriotts Ridge High | Larger | Lower economic need | Higher S:T ratio |
| Reservoir High | Larger | Lower economic need | Higher S:T ratio |
| Atholton High | Larger | Lower economic need | Higher S:T ratio |
| Howard High | Larger | Lower economic need | Higher S:T ratio |
| Mount Hebron High | Larger | Lower economic need | Higher S:T ratio |
Comparisons are relative to Oakland Mills Middle's own figures; each column derives from NCES Common Core of Data.
3 comparable middle schools (grades 6-8) serving the same city.
Matched by enrollment size and by staffing ratio across all of Maryland, not just this city - a different peer set than the local comparisons above.
Next steps
Verify locally before acting on Oakland Mills Middle'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.
Oakland Mills Middle has 415 students enrolled. It is a middle school in Columbia, MD.
The student-teacher ratio at Oakland Mills Middle is 10.1:1, which is 30% lower than the Maryland average of 14.5:1 and 36% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
45.9% of students at Oakland Mills Middle are eligible for free lunch, compared to the Maryland average of 49.0%.
The largest demographic group at Oakland Mills Middle is African American at 32.6% of enrollment, in Columbia, MD. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 73.7/100.
Oakland Mills Middle 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, Oakland Mills Middle ranks #1 of 4 middle schools in Columbia, MD. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all middle schools in Columbia on the city page.
Oakland Mills Middle earns 47/100 on the Resource Investment Index, with class sizes smaller than 93% of Maryland schools. It is also more racially and ethnically mixed than most Maryland 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 Oakland Mills Middle, Howard County Public Schools also operates Marriotts Ridge High (1,741 students), Reservoir High (1,597 students), and Atholton High (1,540 students). See the Howard County 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, “Oakland Mills Middle, Columbia MD.” 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/oakland-mills-middle-md
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