Enrollment
649
Georgia · 2024-25 NCES data
Other / mixed grade configuration · Marietta, GA
Garrison Mill Elementary School
Federal NCES profile for Garrison Mill Elementary School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 51/100.
2024-25 NCES dataOther / mixed grade configurationNCES 130129001935
👥 S:T ratio 42
🌟 Gifted program 70
🎓 Counselors 26
📋 Attendance 67
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Garrison Mill Elementary School earns 51/100 on the Resource Investment Index, with class sizes near the Georgia median.
- #8 of 30
- schools in Marietta · Resource Index
- 51
- Resource Index · Higher
- 14.4:1
- students per teacher
- 6.9%
- free-lunch eligible
Garrison Mill Elementary School has class sizes near the Georgia median. Computed live against every Georgia school reporting to NCES.
By Resource Investment Index, Garrison Mill Elementary School ranks #8 of 30 schools in Marietta, GA.
School address
Teachers (FTE)
45.0
Federal CCD staff survey
Students per teacher
14.4:1
vs 14.4:1 Georgia avg
+0% vs state
Free-lunch eligible
6.9%
vs 60.7% Georgia avg
-89% vs state
Student-teacher ratio in context
How Garrison Mill Elementary School compares with Georgia and U.S. medians
What stands out at Garrison Mill Elementary School
Garrison Mill Elementary School is a lower-poverty, mid-sized combined-grade school in Marietta, Georgia, enrolling 649 students.
At 14.4:1, its student-teacher ratio sits close to the Georgia median, within a few percentage points of the 14.4:1 state norm, neither notably crowded nor notably small.
Comparatively few students face economic hardship here, 6.9% free-meal eligibility runs 89% below the Georgia average.
With 649 students, its enrollment sits close to the Georgia median campus size.
Its Resource Investment Index lands in the upper third of 2,314 scored Georgia schools.
Against 147 statewide peers matched on enrollment and economic need, it ranks in the upper tier at #33.
Its student body is led by White (69%) and Asian (12%) (diversity index 50/100).
Counselor availability sits well past the ASCA benchmark, roughly 371 students sharing each counselor, though short of the most stretched campuses.
13.3% of students were chronically absent in the 2021-22 collection, in line with the post-pandemic national range.
Among Marietta's public schools, it stands alongside Sope Creek Elementary School (1,104 students): Garrison Mill Elementary School is smaller than that campus by headcount and runs leaner classes (14.4:1 vs 15.3:1).
Cobb County also operates Campbell High School (3,085 students) and Osborne High School (2,790 students) alongside Garrison Mill Elementary 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 Garrison Mill Elementary School compares
Garrison Mill Elementary 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 | 14.4:1 | ▼ 0% | 14.4:1 | 15.7:1 |
| Free-lunch eligible | 6.9% | ▼ 89% | 60.7% | 51.7% |
| Enrollment | 649 | top 48% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
14.4:1
Leaner classes than 53% of US schools, a middle-of-the-pack class size.
649
Bigger than 77% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
6.9%
free-lunch eligible
- 89% 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
14.4:1
students per teacher
- 0% above state mean
Top 55% in Georgia - lower ratio than 45% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
13.3%
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
Counselors1.8 FTE
Per 371 students, the combined health-and-guidance staffing load for this school.
Discipline context
2
in-school suspensions + 5 out-of-school
Suspension rate: 0.3 per 100 students. Combined in-school and out-of-school rate: 1.1 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
White 68.7%
Asian 11.6%
Hispanic or Latino 8.6%
African American 5.9%
Two or More 5.2%
Largest group: White at 68.7% of enrollment.
Student-body diversity index 50.1/100
Simpson diversity index - at 50.1, Garrison Mill Elementary School is about as mixed as the Georgia school average of 50.0.
Programs
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for Cobb County, which includes Garrison Mill Elementary 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 Garrison Mill Elementary 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 | Higher S:T ratio |
| Walton High School | Larger | Similar economic need | Higher S:T ratio |
| Pebblebrook High School | Larger | Higher economic need | Higher S:T ratio |
| North Cobb High School | Larger | Higher economic need | Higher S:T ratio |
Comparisons are relative to Garrison Mill Elementary 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 other schools in Marietta
6 comparable other schools (grades Mixed) serving the same city.
Sope Creek Elementary School
Standard public school
1,104 students 15.3:1 students per teacher
East Side Elementary School
Standard public school
1,072 students 13.9:1 students per teacher
Cheatham Hill Elementary School
Standard public school
1,021 students 13.4:1 students per teacher
Brumby Elementary School
Standard public school
963 students 12.3:1 students per teacher
Mount Bethel Elementary School
Standard public school
898 students 13.2:1 students per teacher
Dowell Elementary School
Standard public school
898 students 13:1 students per teacher
Similar other 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 (~649 students)
Similar student-teacher ratio (~14.4:1)
Next steps
Verify locally before acting on Garrison Mill Elementary School's federal record.
- Compare Garrison Mill Elementary 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 Garrison Mill Elementary School
How many students attend Garrison Mill Elementary School?
Garrison Mill Elementary School has 649 students enrolled. It is a public school in Marietta, GA.
What is the student-teacher ratio at Garrison Mill Elementary School?
The student-teacher ratio at Garrison Mill Elementary School is 14.4:1, which is 0% higher than the Georgia average of 14.4:1 and 8% lower than the national average of 15.7:1.
What percentage of students receive free lunch at Garrison Mill Elementary School?
6.9% of students at Garrison Mill Elementary School are eligible for free lunch, compared to the Georgia average of 60.7%.
What is the racial and ethnic makeup of Garrison Mill Elementary School?
The largest demographic group at Garrison Mill Elementary School is White at 68.7% of enrollment, in Marietta, GA. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 50.1/100.
What is the Resource Investment Index for Garrison Mill Elementary School?
Garrison Mill Elementary School has a Resource Investment Index of 51/100 (higher 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 Garrison Mill Elementary School rank among schools in Marietta?
By Resource Investment Index, Garrison Mill Elementary School ranks #8 of 30 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 schools in Marietta on the city page.
Is Garrison Mill Elementary School a good school?
Garrison Mill Elementary School earns 51/100 on the Resource Investment Index, with class sizes near the Georgia median. 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 Garrison Mill Elementary 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.