The bulletin board for America's public schools. Parents, teachers, students, and staff. One community per school.
SCHOOL COMMUNITY·COBB COUNTY·NCES 130129001935

Garrison Mill Elementary School

4111 Wesley Chapel Rd, Marietta, GA 30062 · (770) 642-5600 · Cobb County
GRADES PK–05ELEMENTARY21-SUBURBREGULAR SCHOOL649 STUDENTS
Enrollment
649
Elementary
DISTRICT 691 · STATE 605
Student : Teacher
14.1:1
46 FTE teachers
DISTRICT 12.0:1 · STATE 13.3:1
Free / Reduced Lunch
12%
76 students
DISTRICT 56% · STATE 74%
Community
6
0 members
Enrollment and student:teacher ratio compared against other elementary schools. Free/Reduced Lunch and demographics compared against all schools.

Enrollment by grade, 2024-25

GradeStudentsShare
Pre-K122%
Kindergarten9615%
Grade 110616%
Grade 210316%
Grade 39815%
Grade 412419%
Grade 511017%

This year's kindergarten class (96) is 13% smaller than its 5th grade class (110).

Student demographics
50%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 73% · STATE 71% · US 70%
White
44669%
DISTRICT 32% · STATE 34% · US 43%
Hispanic
569%
DISTRICT 27% · STATE 19% · US 30%
Black
386%
DISTRICT 29% · STATE 36% · US 15%
Asian
7512%
DISTRICT 6% · STATE 5% · US 6%
Two+
345%
DISTRICT 6% · STATE 5% · US 5%
Student head counts by race/ethnicity from federal NCES enrollment data. District, state, and US figures are each group's share of all public school students in that area (US excludes territories). Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
Male
32951%
Female
32049%

School pathway

Students here typically continue to
Garrison Mill Elementary School→Mabry Middle School→Lassiter High School
Based on published attendance-zone data from Cobb County. Zones change; confirm enrollment with the district.

Discussions

+ POST

Test scores

Georgia Milestones 2024-25 . % Proficient or Distinguished
English Language Arts
64.9%
GA avg 40.1% . -10.0pp since 2021
Math
69.8%
GA avg 44.6% . -8.1pp since 2021

What this means: On the Georgia Milestones, Georgia's statewide test, about 65 of every 100 students at this school read and write at grade level and about 70 of 100 do math at grade level. Across all Georgia schools, those numbers are about 40 and 45. Reading and writing scores are down about 10 points since 2021, while math scores are down about 8 points.

Georgia Milestones results by year

School yearEnglish Language ArtsMath
2024-2564.9%69.8%
2023-2471.2%71.2%
2022-2365.3%67.6%
2021-2275.0%77.9%
% Proficient or Distinguished, all students and all tested grades.
Source: Georgia Milestones. All students, all grades. See all years and grades →

BeatsExpectations

Demographically-adjusted score · methodology
Tier
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
69.1%
composite math + reading, all grades
Predicted
71.3%
based on GA schools with similar FRL share
Beats by
-2.1pp
below demographic expectation

What this means: About 69% of students here test proficient in math and reading, compared with the roughly 71% typical for Georgia schools with a similar share of low-income students. BeatsExpectations measures results against demographically similar schools rather than by raw scores, and this school falls within the typical range, neither among Georgia's top nor bottom 10%.

BeatsExpectations runs a per-state regression of proficiency on free/reduced-lunch share, then scores each school by residual. How this is calculated →

Schools most like Garrison Mill Elementary School

Garrison Mill Elementary School's state test result (69.1% proficient) is higher than 3 of the 5 schools below with a result.

SchoolStudentsLow-incomeProficient
Garrison Mill Elementary School this school64911.7%69.1%
Davis Elementary School
Marietta
63512.8%66.3%
Shallowford Falls Elementary School
Marietta
59114.7%69.1%
Crabapple Crossing Elementary School
Alpharetta
6286.1%79.2%
Rocky Branch Elementary School
Bogart
59918.4%73.6%
Rocky Mount Elementary School
Marietta
57616.8%66.4%
Matched among Georgia elementary schools on enrollment, the share of students from low-income families (eligible for free or reduced-price lunch), and racial and ethnic makeup. Proficient is the average share of students meeting the state standard across all of the school's state tests in 2023-24 and 2024-25, the same combined score our test-score rankings use. Online schools and schools serving specialized populations are not matched.

Where Garrison Mill Elementary School ranks

Among elementary schools
MeasureThis schoolIn GeorgiaIn Cobb County
State test proficiency
ranked highest first
69.1%#104 of 1,208#11 of 72
Math proficiency
ranked highest first
69.8%#135 of 1,215
▼ 17
#12 of 72
▲ 2
Reading proficiency
ranked highest first
64.9%#100 of 1,215
▼ 26
#11 of 72
▲ 1
3-year test score change
ranked biggest drop first
-9.1pp#39 of 1,183#2 of 72
Enrollment
ranked largest first
649#486 of 1,324#36 of 78
Students per teacher
ranked fewest first
14.1:1#855 of 1,301#72 of 77
Diversity index
ranked most diverse first
50.1%#788 of 1,301#69 of 77
Free and reduced lunch
ranked highest share first
11.7%#1,282 of 1,312#72 of 78
Enrollment change since 2017-18
ranked steepest decline first
-5.5%#694 of 854#52 of 57
Ranked against other public elementary schools. Online schools are left out of every list, and test-score lists leave out schools that serve specialized populations. Each rank links to the full list. Arrows under a test-score rank show places moved since the prior test year, among schools tested both years.

4-year change

SY 2020-21 vs SY 2024-25
Enrollment
649
+18 (+3%) vs 2020
-19% since 1990-91, when it was 799
Student : Teacher
14.1:1
was 13.4:1
Source: NCES Common Core of Data

Enrollment and staffing by year

School yearStudentsTeachers (FTE)Students per teacherFree and reduced lunch
2024-2564946.114.1:112% (76)
2023-2464645.114.3:114% (89)
2022-2365045.614.3:110% (62)
2020-216314713.4:18% (50)
2017-1868745.515.1:17% (45)
2015-166664514.8:17% (48)
2010-116864814.3:110% (67)
2000-016184414.1:13% (19)
1990-917995614.3:1N/A
Source: NCES Common Core of Data. Rows are the federal collections on file for Garrison Mill Elementary School.

Since 2017-18: students down 6% (687 to 649); teachers up 1% (45.5 to 46.1).

About Garrison Mill Elementary School

Garrison Mill Elementary School is a medium-sized elementary school in Georgia, located in Marietta. Students in pre-K through 5 attend the school, which enrolls 649 students.

Cobb County is the local district for Garrison Mill Elementary School. It runs 110 schools with 105,738 students.

Garrison Mill Elementary School is 69% White by enrollment. Other reported shares: 12% Asian, 9% Hispanic, 6% Black, and 5% multiracial. That compares with about 49% White among all Cobb County residents. Pick two students at random and there is a 50% chance they belong to different racial or ethnic groups; that figure is the school's diversity index.

Garrison Mill Elementary School counts 46.1 full-time-equivalent teachers, about 14.1 students for each one. This ratio sits 0.7 above the 13.3:1 average for elementary schools in Georgia. About 12% of students at the school meet free or reduced-price lunch income limits. By comparison, the figure for public schools in Cobb County is 53%.

Given its share of students eligible for free or reduced-price lunch, Garrison Mill Elementary School would be expected to post about 71.3%. Its actual average proficiency rate on state tests is 69.1%.

In the county around the school, Cobb County, the median household income is $102,738, about 51% of adults have at least a bachelor's degree, and roughly 6% of residents are in poverty. Cobb County is home to 129 public schools and about 116,609 public school students.

The closest other public school is Shallowford Falls Elementary School, about 1.0 miles away. Within five miles are at least 8 other public schools. Of 9 schools in the immediate area with test results, Garrison Mill Elementary School ranks 7th on average proficiency.

The National Center for Education Statistics classifies the school's location as Suburb: Large, meaning it is in a suburban area outside a principal city, within an urbanized area with a population of 250,000 or more.

2024-25 enrollment was 649, a 3% rise from 631 in 2020-21.

Conversations here can range across school safety, transportation, and start times. Posting is open to anyone connected to the school.

Cobb County at a glance

View full county profile
Population
775,208
Census ACS
Median income
$102,738
Household, ACS
Bachelor's+
51%
Adults 25+
Poverty rate
6%
Below federal line
Schools in county
129
116,609 students

Quick facts

School name
Garrison Mill Elementary School
District
Cobb County
Address
4111 Wesley Chapel Rd, Marietta, GA 30062
Phone
(770) 642-5600
County
Cobb County
Level
Elementary
Grade range
PK–05
Total enrollment
649
Teachers (FTE)
46
Student–teacher ratio
14.1:1
Free and reduced lunch
76 (12%)
Locale
21-Suburb: Large
NCES ID
130129001935
Charter school
No
Virtual school
No

Related schools

Other schools in Cobb County
Other schools in Marietta
Nearby schools

Frequently asked questions

About Garrison Mill Elementary School
What is the total enrollment at Garrison Mill Elementary School?
Garrison Mill Elementary School enrolls approximately 649 students in grades PK-05.
What grades does Garrison Mill Elementary School serve?
Garrison Mill Elementary School serves grades PK-05.
What is the student-teacher ratio at Garrison Mill Elementary School?
The student-to-teacher ratio at Garrison Mill Elementary School is approximately 14.1:1 (46 FTE teachers).
What is the racial breakdown of students at Garrison Mill Elementary School?
At Garrison Mill Elementary School, the student body is approximately 69% White, 9% Hispanic, 6% Black, 12% Asian, 5% Two or more.
Is Garrison Mill Elementary School public or private?
Garrison Mill Elementary School is a public K-12 school, overseen by Cobb County.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.
+ Post