Enrollment
1,173
Maryland · 2024-25 NCES data
Middle school (grades 6-8) · Millersville, MD
Old Mill Middle South
Federal NCES profile for Old Mill Middle South, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 46/100.
2024-25 NCES dataMiddle school (grades 6-8)NCES 240006000108
👥 S:T ratio 36
🌟 Gifted program 70
🎓 Counselors 22
📋 Attendance 55
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Old Mill Middle South earns 46/100 on the Resource Investment Index, with class sizes larger than 71% of Maryland schools.
- #4 of 6
- public schools in Millersville · Resource Index
- 46
- Resource Index · Typical
- 16.1:1
- large classes for Maryland
- 38.2%
- free-lunch eligible
Old Mill Middle South has class sizes larger than 71% of Maryland schools. Computed live against every Maryland school reporting to NCES.
By Resource Investment Index, Old Mill Middle South ranks #4 of 6 public schools in Millersville, MD.
School address
District: Anne Arundel County Public Schools · Maryland
NCES ID 240006000108 Verify on NCES CCD record →
Teachers (FTE)
73.0
Federal CCD staff survey
Students per teacher
16.1:1
vs 14.5:1 Maryland avg
+11% vs state
Free-lunch eligible
38.2%
vs 49.0% Maryland avg
-22% vs state
Student-teacher ratio in context
How Old Mill Middle South compares with Maryland and U.S. medians
What stands out at Old Mill Middle South
Old Mill Middle South is a large middle school in Millersville, Maryland, enrolling 1,173 students.
Class loads run somewhat heavier than typical: 16.1:1 puts it in the larger third of Maryland schools by student-teacher ratio.
Economic need runs somewhat below the state's typical profile, with 38.2% of students eligible for free meals.
By headcount it is one of the larger campuses in Maryland, bigger than 90% of state schools at 1,173 students.
Its Resource Investment Index lands in the upper third of 1,382 scored Maryland schools.
Against 127 statewide peers matched on enrollment and economic need, it ranks in the upper tier at #39.
Its student body is led by African American (39%) and White (28%) (diversity index 72/100).
Counselor availability sits well past the ASCA benchmark, roughly 391 students sharing each counselor, though short of the most stretched campuses.
17.8% of students were chronically absent in the 2021-22 collection, in line with the post-pandemic national range.
Among Millersville's middle schools, it stands alongside Old Mill Middle North (958 students): Old Mill Middle South is larger than that campus by headcount and runs heavier classes (16.1:1 vs 12.9:1).
Anne Arundel County Public Schools also operates Glen Burnie High (2,226 students) and North County High (2,161 students) alongside Old Mill Middle South.
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
How Old Mill Middle South compares
Old Mill Middle South on the metrics families compare, against Maryland and U.S. means.
| Metric | This school | vs Maryland | Maryland avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 16.1:1 | ▲ 11% | 14.5:1 | 15.7:1 |
| Free-lunch eligible | 38.2% | ▼ 22% | 49.0% | 51.7% |
| Enrollment | 1,173 | top 10% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
16.1:1
Leaner classes than 37% of US schools, a middle-of-the-pack class size.
1,173
Bigger than 94% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Economic need
38.2%
free-lunch eligible
- 22% below the Maryland average of 49.0%
Below the 40% Title I threshold; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
16.1:1
students per teacher
- 11% above state mean
Top 71% in Maryland - lower ratio than 29% of state schools
Between 16:1 and 20:1, squarely in the typical U.S. public-school staffing range.
Engagement
17.8%
chronically absent (missed 10%+ of school days)
In the 15-20% range, nearing the "high" absenteeism threshold.
Funding equity
$16,620
per pupil, district-wide
- below Maryland avg of $20,446
Close to the U.S. public-school average per-pupil spend.
Support staff
Counselors3.0 FTE
Per 391 students, the combined health-and-guidance staffing load for this school.
Discipline context
0
in-school suspensions + 130 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 11.1 per 100 students. Reported via the Civil Rights Data Collection.
Overview
- Common Core of Data (June 2026): enrollment, staffing, and the student-teacher ratio above.
- Civil Rights Data Collection: discipline counts and program access (AP, gifted, special education).
- F-33 School District Finance Survey: the district-wide per-pupil spending figures below.
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.
Student demographics
African American 38.8%
White 28.0%
Hispanic or Latino 20.5%
Two or More 7.5%
Asian 4.7%
Native Hawaiian / Pacific Islander 0.3%
American Indian / Alaska Native 0.2%
Largest group: African American at 38.8% of enrollment.
Student-body diversity index 72.1/100
Simpson diversity index - at 72.1, Old Mill Middle South is more mixed than the Maryland school average of 52.3.
Programs
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for Anne Arundel County Public Schools, which includes Old Mill Middle South.
$16,620
Per student
-19%
vs Maryland
Avg $20,446
+0%
vs U.S.
Avg $16,593
Revenue mix
Local 56.4%
State 32.3%
Federal 11.4%
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.
How Old Mill Middle South Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Glen Burnie High | Larger | Higher economic need | Similar S:T ratio |
| North County High | Larger | Higher economic need | Similar S:T ratio |
| Broadneck High | Larger | Lower economic need | Higher S:T ratio |
| Annapolis High | Larger | Higher economic need | Lower S:T ratio |
| Meade High | Larger | Higher economic need | Similar S:T ratio |
Comparisons are relative to Old Mill Middle South's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 2,226
- Students per teacher
- 16.7:1
- Resource Index
- 47/100
- Enrollment
- 2,161
- Students per teacher
- 15:1
- Resource Index
- 52/100
- Enrollment
- 2,143
- Students per teacher
- 17.6:1
- Resource Index
- 44/100
- Enrollment
- 2,075
- Students per teacher
- 14:1
- Resource Index
- 39/100
- Enrollment
- 2,045
- Students per teacher
- 15.1:1
- Resource Index
- 50/100
Similar middle schools in Millersville
1 comparable middle schools (grades 6-8) serving the same city.
Similar middle schools statewide
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.
Similar enrollment (~1,173 students)
Similar student-teacher ratio (~16.1:1)
Next steps
Verify locally before acting on Old Mill Middle South's federal record.
- Compare Old Mill Middle South against another school. Compare schools
- Anne Arundel County Public Schools's spending and staffing shape this school. District profile
- Confirm current enrollment and boundaries with the school. Choosing guide
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.
Frequently asked questions about Old Mill Middle South
How many students attend Old Mill Middle South?
Old Mill Middle South has 1,173 students enrolled. It is a middle school in Millersville, MD.
What is the student-teacher ratio at Old Mill Middle South?
The student-teacher ratio at Old Mill Middle South is 16.1:1, which is 11% higher than the Maryland average of 14.5:1 and 3% higher than the national average of 15.7:1.
What percentage of students receive free lunch at Old Mill Middle South?
38.2% of students at Old Mill Middle South are eligible for free lunch, compared to the Maryland average of 49.0%.
What is the racial and ethnic makeup of Old Mill Middle South?
The largest demographic group at Old Mill Middle South is African American at 38.8% of enrollment, in Millersville, MD. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 72.1/100.
What is the Resource Investment Index for Old Mill Middle South?
Old Mill Middle South has a Resource Investment Index of 46/100 (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).
How does Old Mill Middle South rank among public schools in Millersville?
By Resource Investment Index, Old Mill Middle South ranks #4 of 6 public schools in Millersville, MD. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all public schools in Millersville on the city page.
Is Old Mill Middle South a good school?
Old Mill Middle South earns 46/100 on the Resource Investment Index, with class sizes larger than 71% of 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.
What other schools are in Anne Arundel County Public Schools?
Besides Old Mill Middle South, Anne Arundel County Public Schools also operates Glen Burnie High (2,226 students), North County High (2,161 students), and Broadneck High (2,143 students). See the Anne Arundel County Public Schools district page for the complete list.
Related tools
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.