Enrollment
938
Georgia · 2024-25 NCES data
Middle school (grades 6-8) · Marietta, GA
Mabry Middle School
Federal NCES profile for Mabry Middle School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 45/100.
2024-25 NCES dataMiddle school (grades 6-8)NCES 130129000512
👥 S:T ratio 34
🌟 Gifted program 70
🎓 Counselors 6
📋 Attendance 69
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Mabry Middle School earns 45/100 on the Resource Investment Index, with class sizes larger than 80% of Georgia schools.
- #6 of 12
- middle schools in Marietta · Resource Index
- 45
- Resource Index · Typical
- 16.5:1
- large classes for Georgia
- 7.0%
- free-lunch eligible
Mabry Middle School has class sizes larger than 80% of Georgia schools. Computed live against every Georgia school reporting to NCES.
By Resource Investment Index, Mabry Middle School ranks #6 of 12 middle schools in Marietta, GA.
School address
Teachers (FTE)
57.0
Federal CCD staff survey
Students per teacher
16.5:1
vs 14.4:1 Georgia avg
+15% vs state
Free-lunch eligible
7.0%
vs 60.7% Georgia avg
-88% vs state
Student-teacher ratio in context
How Mabry Middle School compares with Georgia and U.S. medians
What stands out at Mabry Middle School
Mabry Middle School is a lower-poverty, mid-sized middle school in Marietta, Georgia, enrolling 938 students.
Class loads run somewhat heavier than typical: 16.5:1 puts it in the larger third of Georgia schools by student-teacher ratio.
Comparatively few students face economic hardship here, 7.0% free-meal eligibility runs 88% below the Georgia average.
Enrollment of 938 puts it in the larger third of Georgia schools by headcount.
Its Resource Investment Index sits near the middle of the pack among 2,314 scored Georgia schools.
Against 175 statewide peers matched on enrollment and economic need, it ranks mid-pack at #114.
Its student body is led by White (66%) and Asian (10%) (diversity index 54/100).
Counselor access is stretched at roughly 469 students per counselor, well above the ASCA-recommended 250:1 ceiling.
12.4% of students were chronically absent in the 2021-22 collection, in line with the post-pandemic national range.
Among Marietta's middle schools, it stands alongside East Cobb Middle School (1,352 students): Mabry Middle School is smaller than that campus by headcount and runs leaner classes (16.5:1 vs 16.9:1).
Cobb County also operates Campbell High School (3,085 students) and Osborne High School (2,790 students) alongside Mabry 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
How Mabry Middle School compares
Mabry Middle School on the metrics families compare, against Georgia and U.S. means.
| Metric | This school | vs Georgia | Georgia avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 16.5:1 | ▲ 15% | 14.4:1 | 15.7:1 |
| Free-lunch eligible | 7.0% | ▼ 88% | 60.7% | 51.7% |
| Enrollment | 938 | top 22% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
16.5:1
Leaner classes than 34% of US schools, a middle-of-the-pack class size.
938
Bigger than 90% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Economic need
7.0%
free-lunch eligible
- 88% below the Georgia average of 60.7%
Below the 40% Title I threshold, among the lower-need profiles in the state; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
16.5:1
students per teacher
- 15% above state mean
Top 80% in Georgia - lower ratio than 20% of state schools
Between 16:1 and 20:1, squarely in the typical U.S. public-school staffing range.
Engagement
12.4%
chronically absent (missed 10%+ of school days)
In the 10-15% range, above the pre-pandemic national baseline but within the broader post-pandemic picture.
Funding equity
$13,203
per pupil, district-wide
- below Georgia avg of $13,863
Well below the U.S. average per-pupil spend, a notably leaner funding position that may affect programs, facilities, and staffing.
Support staff
Counselors2.0 FTE
Per 469 students, the combined health-and-guidance staffing load for this school.
Discipline context
92
in-school suspensions + 13 out-of-school
Suspension rate: 9.8 per 100 students. Combined in-school and out-of-school rate: 11.2 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
White 66.0%
Asian 10.3%
Hispanic or Latino 9.8%
African American 8.0%
Two or More 5.3%
American Indian / Alaska Native 0.4%
Native Hawaiian / Pacific Islander 0.1%
Largest group: White at 66.0% of enrollment.
Student-body diversity index 53.5/100
Simpson diversity index - at 53.5, Mabry Middle School is more mixed than the Georgia school average of 50.0.
Programs
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for Cobb County, which includes Mabry Middle School.
$13,203
Per student
-5%
vs Georgia
Avg $13,863
-20%
vs U.S.
Avg $16,593
Revenue mix
Local 52.6%
State 35.4%
Federal 11.9%
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 Mabry Middle School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Campbell High School | Larger | Higher economic need | Higher S:T ratio |
| Osborne High School | Larger | Higher economic need | Similar S:T ratio |
| Walton High School | Larger | Similar economic need | Higher S:T ratio |
| Pebblebrook High School | Larger | Higher economic need | Similar S:T ratio |
| North Cobb High School | Larger | Higher economic need | Similar S:T ratio |
Comparisons are relative to Mabry Middle School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 3,085
- Students per teacher
- 18.8:1
- Resource Index
- 37/100
- Enrollment
- 2,790
- Students per teacher
- 17:1
- Resource Index
- 44/100
- Enrollment
- 2,705
- Students per teacher
- 19.7:1
- Resource Index
- 43/100
- Enrollment
- 2,574
- Students per teacher
- 17.8:1
- Resource Index
- 38/100
- Enrollment
- 2,463
- Students per teacher
- 17.5:1
- Resource Index
- 39/100
Similar middle schools in Marietta
6 comparable middle schools (grades 6-8) serving the same city.
East Cobb Middle School
Standard public school
1,352 students 16.9:1 students per teacher
Marietta Middle School
Standard public school
1,352 students 13.9:1 students per teacher
Dickerson Middle School
Standard public school
1,225 students 17.5:1 students per teacher
Dodgen Middle School
Standard public school
1,178 students 16.8:1 students per teacher
Hightower Trail Middle School
Standard public school
944 students 14.8:1 students per teacher
Daniell Middle School
Standard public school
884 students 13.6:1 students per teacher
Similar middle schools statewide
Matched by enrollment size and by staffing ratio across all of Georgia, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~938 students)
Next steps
Verify locally before acting on Mabry Middle School's federal record.
- Compare Mabry Middle School against another school. Compare schools
- Cobb County'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 Mabry Middle School
How many students attend Mabry Middle School?
Mabry Middle School has 938 students enrolled. It is a middle school in Marietta, GA.
What is the student-teacher ratio at Mabry Middle School?
The student-teacher ratio at Mabry Middle School is 16.5:1, which is 15% higher than the Georgia average of 14.4:1 and 5% higher than the national average of 15.7:1.
What percentage of students receive free lunch at Mabry Middle School?
7.0% of students at Mabry Middle School are eligible for free lunch, compared to the Georgia average of 60.7%.
What is the racial and ethnic makeup of Mabry Middle School?
The largest demographic group at Mabry Middle School is White at 66.0% of enrollment, in Marietta, GA. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 53.5/100.
What is the Resource Investment Index for Mabry Middle School?
Mabry Middle School has a Resource Investment Index of 45/100 (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 Mabry Middle School rank among middle schools in Marietta?
By Resource Investment Index, Mabry Middle School ranks #6 of 12 middle schools in Marietta, GA. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all middle schools in Marietta on the city page.
Is Mabry Middle School a good school?
Mabry Middle School earns 45/100 on the Resource Investment Index, with class sizes larger than 80% of Georgia 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 Cobb County?
Besides Mabry Middle School, Cobb County also operates Campbell High School (3,085 students), Osborne High School (2,790 students), and Walton High School (2,705 students). See the Cobb County 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.