- Enrollment
- 3,085
- Students per teacher
- 18.8:1
- Resource Index
- 37/100
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
CCD year-over-year · 2022-23 → 2023-24
+2 students YoY
Mabry Middle School held near 918 students from 2022-23 to 2023-24 (+2 headcount).
Teacher FTE added 57.1 → 59.1 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Steady CCD campus
+2 students YoY 130129000512 · Marietta, GA Middle · MID · TRAD
938 enr · 16.5:1 · 7.0% lunch · RII 45
Nearest enrollment peer: Campbell High School (3,085 students)
Mabry Middle School held near 918 students from 2022-23 to 2023-24 (+2 headcount). Teacher FTE added 57.1 → 59.1 across the same CCD years. Read with this school → · District book → · Georgia schools → · Find another →
Mabry Middle School in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- Campbell High
Campbell High School
3,085 students
- Osborne High S
Osborne High School
2,790 students
- Walton High Sc
Walton High School
2,705 students
- Pebblebrook Hi
Pebblebrook High School
2,574 students
- North Cobb Hig
North Cobb High School
2,463 students
- This school 938
Mabry Middle School
938 students
What this shows Mabry Middle School reports 938 students on the CCD universe file.
How Mabry Middle School compares
Mabry Middle School held steady on CCD headcount: ratios and free-lunch share vs 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 methodology
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
$14,680
per pupil, district-wide
- above Georgia avg of $14,615
Somewhat below the U.S. average per-pupil spend; funding constraints 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.
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
District finance for Cobb County reports $14,680 per pupil (NCES F-33) - open the district page for the full revenue mix.
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
- 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
Nationwide middle schools with similar size or staffing
Out-of-state peers matched by enrollment and by student-teacher ratio, not the same-city or same-district lists above.
Similar enrollment (~938 students)
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. CCD year-over-year: 916 (2022-23) → 918 (2023-24), nearly flat (+2).
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, gifted-program reporting, counselor availability, chronic absenteeism. 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.
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.