Enrollment
1,352
Georgia · 2024-25 NCES data
Middle school (grades 6-8) · Marietta, GA
East Cobb Middle School
Federal NCES profile for East Cobb Middle School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 33/100.
2024-25 NCES dataMiddle school (grades 6-8)NCES 130129000536
👥 S:T ratio 32
🌟 Gifted program 70
🎓 Counselors 10
📋 Attendance 19
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
East Cobb Middle School earns 33/100 on the Resource Investment Index, with class sizes larger than 84% of Georgia schools.
- #12 of 12
- middle schools in Marietta · Resource Index
- 33
- Resource Index · Typical
- 16.9:1
- large classes for Georgia
- 46.0%
- free-lunch eligible
East Cobb Middle School has class sizes larger than 84% of Georgia schools. Computed live against every Georgia school reporting to NCES.
By Resource Investment Index, East Cobb Middle School ranks #12 of 12 middle schools in Marietta, GA.
School address
Teachers (FTE)
80.0
Federal CCD staff survey
Students per teacher
16.9:1
vs 14.4:1 Georgia avg
+17% vs state
Free-lunch eligible
46.0%
vs 60.7% Georgia avg
-24% vs state
Student-teacher ratio in context
How East Cobb Middle School compares with Georgia and U.S. medians
What stands out at East Cobb Middle School
East Cobb Middle School is a large middle school in Marietta, Georgia, enrolling 1,352 students.
Class loads run somewhat heavier than typical: 16.9:1 puts it in the larger third of Georgia schools by student-teacher ratio.
Economic need runs somewhat below the state's typical profile, with 46.0% of students eligible for free meals.
By headcount it is one of the larger campuses in Georgia, bigger than 90% of state schools at 1,352 students.
Its Resource Investment Index lands in the lower third of 2,314 scored Georgia schools.
Among 214 similarly sized, similarly resourced-need Georgia schools statewide, it ranks #172, in the lower tier once campus size and economic need are matched.
Its student body is led by African American (38%) and Hispanic or Latino (35%) (diversity index 70/100).
Counselor access is stretched at roughly 451 students per counselor, well above the ASCA-recommended 250:1 ceiling.
Chronic absenteeism is elevated: 32.2% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
Discipline events run high: 465 in- and out-of-school suspensions were reported for 1,352 students in the 2021-22 Civil Rights Data Collection.
Among Marietta's middle schools, it stands alongside Marietta Middle School (1,352 students): East Cobb Middle School is larger than that campus by headcount and runs heavier classes (16.9:1 vs 13.9:1).
Cobb County also operates Campbell High School (3,085 students) and Osborne High School (2,790 students) alongside East Cobb 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 East Cobb Middle School compares
East Cobb 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 | 16.9:1 | ▲ 17% | 14.4:1 | 15.7:1 |
| Free-lunch eligible | 46.0% | ▼ 24% | 60.7% | 51.7% |
| Enrollment | 1,352 | top 10% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
16.9:1
Leaner classes than 31% of US schools, heavier class loads than most.
1,352
Bigger than 95% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Economic need
46.0%
free-lunch eligible
- 24% below the Georgia average of 60.7%
Above the 40% Title I schoolwide threshold; federal funds support the whole school, not individual students.
Staffing depth
16.9:1
students per teacher
- 17% above state mean
Top 84% in Georgia - lower ratio than 16% of state schools
Between 16:1 and 20:1, squarely in the typical U.S. public-school staffing range.
Engagement
32.2%
chronically absent (missed 10%+ of school days)
At or above 20%, the commonly used threshold for "high" chronic absenteeism, signaling significant barriers to regular attendance.
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
Counselors3.0 FTE
Per 451 students, the combined health-and-guidance staffing load for this school.
Discipline context
283
in-school suspensions + 182 out-of-school
Suspension rate: 20.9 per 100 students. Combined in-school and out-of-school rate: 34.4 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 37.8%
Hispanic or Latino 34.5%
White 20.1%
Two or More 4.6%
Asian 2.7%
American Indian / Alaska Native 0.1%
Native Hawaiian / Pacific Islander 0.1%
Largest group: African American at 37.8% of enrollment.
Student-body diversity index 69.5/100
Simpson diversity index - at 69.5, East Cobb 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 East Cobb 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 East Cobb Middle School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Campbell High School | Larger | Similar economic need | Higher S:T ratio |
| Osborne High School | Larger | Higher economic need | Similar S:T ratio |
| Walton High School | Larger | Lower economic need | Higher S:T ratio |
| Pebblebrook High School | Larger | Higher economic need | Similar S:T ratio |
| North Cobb High School | Larger | Lower economic need | Similar S:T ratio |
Comparisons are relative to East Cobb 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.
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
Mabry Middle School
Standard public school
938 students 16.5:1 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 (~1,352 students)
Similar student-teacher ratio (~16.9:1)
Next steps
Verify locally before acting on East Cobb Middle School's federal record.
- Compare East Cobb 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 East Cobb Middle School
How many students attend East Cobb Middle School?
East Cobb Middle School has 1,352 students enrolled. It is a middle school in Marietta, GA.
What is the student-teacher ratio at East Cobb Middle School?
The student-teacher ratio at East Cobb Middle School is 16.9:1, which is 17% higher than the Georgia average of 14.4:1 and 8% higher than the national average of 15.7:1.
What percentage of students receive free lunch at East Cobb Middle School?
46.0% of students at East Cobb Middle School are eligible for free lunch, compared to the Georgia average of 60.7%.
What is the racial and ethnic makeup of East Cobb Middle School?
The largest demographic group at East Cobb Middle School is African American at 37.8% of enrollment, in Marietta, GA. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 69.5/100.
What is the Resource Investment Index for East Cobb Middle School?
East Cobb Middle School has a Resource Investment Index of 33/100 (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 East Cobb Middle School rank among middle schools in Marietta?
By Resource Investment Index, East Cobb Middle School ranks #12 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 East Cobb Middle School a good school?
East Cobb Middle School earns 33/100 on the Resource Investment Index, with class sizes larger than 84% 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 East Cobb 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.