Cobb County School District

514 Glover Street
Marietta, GA 30060
(District boundaries shown in map)
9/
10
Top 20%

Top Rankings

Cobb County School District ranks among the top 20% of public school district in Georgia for:

Category
Attribute
Overall Rank
Highest overall rank (Top 20%)
Math Proficiency
Highest math proficiency (Top 20%)
Reading/Language Arts Proficiency
Highest reading/language arts proficiency (Top 20%)
Diversity
Most diverse schools (Top 1%)
Community Size
Largest student body (number of students) (Top 1%)
For the 2026 school year, there are 18 public high schools serving 36,170 students in Cobb County School District. This district's average high testing ranking is 9/10, which is in the top 20% of public high schools in Georgia.
Public High Schools in Cobb County School District have an average math proficiency score of 46% (versus the Georgia public high school average of 35%), and reading proficiency score of 54% (versus the 43% statewide average).
Public High School in Cobb County School District have a Graduation Rate of 88%, which is more than the Georgia average of 85%.
The school with highest graduation rate is Lassiter High School, with 98% graduation rate. Read more about public school graduation rate statistics in Georgia or national school graduation rate statistics.
Minority enrollment is 68% of the student body (majority Black and Hispanic), which is more than the Georgia public high school average of 65% (majority Black).

Overview

This School District
This State (GA)
# Schools
110 Schools
532 Schools
# Students
105,738 Students
577,799 Students
# Teachers
7,477 Teachers
36,002 Teachers
Student-Teacher Ratio
14:1
14:1

Student By Grade

District Rank

Cobb County School District, which is ranked within the top 20% of all 219 school districts in Georgia (based off of combined math and reading proficiency testing data) for the 2022-2023 school year.
The school district's graduation rate of 88% has increased from 85% over five school years.
This School District
State Average (GA)
#32 out of 222 school districts
(Top 20%)
47%
39%
50%
40%
47%
40%
88%
84%
(2022-23)
21.4%
26.2%

Students by Ethnicity:

0.74
0.71
% American Indian
n/a
n/a
% Asian
6%
5%
% Hispanic
27%
19%
% Black
29%
37%
% White
32%
35%
% Hawaiian
n/a
n/a
% Two or more races
6%
4%
All Ethnic Groups

District Revenue and Spending

The revenue/student of $14,919 is higher than the state median of $14,327. The school district revenue/student has grown by 11% over four school years.
The school district's spending/student of $13,772 is higher than the state median of $13,452. The school district spending/student has stayed relatively flat over four school years.
This School District
This State (GA)
Total Revenue
$1,578 MM
$24,999 MM
Spending
$1,456 MM
$23,473 MM
Revenue / Student
$14,919
$14,327
Spending / Student
$13,772
$13,452

Best Cobb County School District Public High Schools (2026)

School
(Math and Reading Proficiency)
Location
Quick Facts
Rank: #11.
Walton High School
Charter School
(Math: 80% | Reading: 89%)
Rank:
10/
10
Top 5%
1590 Bill Murdock Rd
Marietta, GA 30062
(770) 578-3225
Gr: 9-12 | 2,705 students Student-teacher ratio: 19:1 Minority enrollment: 42%
Rank: #22.
Pope High School
(Math: 80% | Reading: 79%)
Rank:
10/
10
Top 5%
3001 Hembree Rd Ne
Marietta, GA 30062
(770) 578-7900
Gr: 9-12 | 1,793 students Student-teacher ratio: 17:1 Minority enrollment: 29%
Rank: #33.
Lassiter High School
(Math: 73% | Reading: 78%)
Rank:
10/
10
Top 5%
2601 Shallowford Rd
Marietta, GA 30066
(678) 494-7863
Gr: 9-12 | 2,005 students Student-teacher ratio: 18:1 Minority enrollment: 33%
Rank: #44.
Harrison High School
(Math: 69% | Reading: 80%)
Rank:
10/
10
Top 5%
4500 Due West Rd Nw
Kennesaw, GA 30152
(678) 594-8104
Gr: 9-12 | 2,224 students Student-teacher ratio: 19:1 Minority enrollment: 33%
Rank: #55.
Hillgrove High School
(Math: 63% | Reading: 66%)
Rank:
10/
10
Top 10%
4165 Luther Ward Rd
Powder Springs, GA 30127
(678) 331-3961
Gr: 9-12 | 2,282 students Student-teacher ratio: 18:1 Minority enrollment: 61%
Rank: #66.
Allatoona High School
(Math: 55% | Reading: 60%)
Rank:
9/
10
Top 20%
3300 Dallas Acworth Hwy Nw
Acworth, GA 30101
(770) 975-6503
Gr: 9-12 | 1,560 students Student-teacher ratio: 16:1 Minority enrollment: 43%
Rank: #77.
Kennesaw Mountain High School
(Math: 52% | Reading: 57%)
Rank:
9/
10
Top 20%
1898 Kennesaw Due West Rd Nw
Kennesaw, GA 30152
(678) 594-8190
Gr: 9-12 | 1,695 students Student-teacher ratio: 16:1 Minority enrollment: 67%
Rank: #88.
Wheeler High School
(Math: 51% | Reading: 50%)
Rank:
8/
10
Top 30%
375 Holt Rd Ne
Marietta, GA 30068
(770) 578-3266
Gr: 9-12 | 2,401 students Student-teacher ratio: 16:1 Minority enrollment: 77%
Rank: #99.
Kell High School
(Math: 46% | Reading: 56%)
Rank:
8/
10
Top 30%
4770 Lee Waters Rd
Marietta, GA 30066
(678) 494-7844
Gr: 9-12 | 1,587 students Student-teacher ratio: 17:1 Minority enrollment: 57%
Rank: #1010.
Sprayberry High School
(Math: 47% | Reading: 52%)
Rank:
8/
10
Top 30%
2525 Sandy Plains Rd
Marietta, GA 30066
(770) 578-3200
Gr: 9-12 | 1,769 students Student-teacher ratio: 17:1 Minority enrollment: 70%
Rank: #1111.
North Cobb High School
(Math: 49% | Reading: 45%)
Rank:
8/
10
Top 30%
3400 Old 41 Hwy Nw
Kennesaw, GA 30144
(770) 975-6685
Gr: 9-12 | 2,463 students Student-teacher ratio: 17:1 Minority enrollment: 73%
Rank: #1212.
Campbell High School
(Math: 36% | Reading: 47%)
Rank:
7/
10
Top 50%
925 Powder Springs St Se
Smyrna, GA 30080
(678) 842-6850
Gr: 9-12 | 3,085 students Student-teacher ratio: 18:1 Minority enrollment: 82%
Rank: #1313.
South Cobb High School
(Math: 26% | Reading: 39%)
Rank:
5/
10
Bottom 50%
1920 Clay Rd
Austell, GA 30106
(770) 819-2611
Gr: 9-12 | 2,081 students Student-teacher ratio: 16:1 Minority enrollment: 94%
Rank: #1414.
Mceachern High School
(Math: 29% | Reading: 36%)
Rank:
5/
10
Bottom 50%
2400 New Macland Rd
Powder Springs, GA 30127
(770) 222-3710
Gr: 9-12 | 2,175 students Student-teacher ratio: 17:1 Minority enrollment: 94%
Rank: #1515.
Pebblebrook High School
(Math: 33% | Reading: 29%)
Rank:
5/
10
Bottom 50%
991 Old Alabama Rd Sw
Mableton, GA 30126
(770) 819-2521
Gr: 9-12 | 2,574 students Student-teacher ratio: 17:1 Minority enrollment: 96%
Rank: #1616.
Cobb Horizon High School
(Math: 20% | Reading: 36%)
Rank:
4/
10
Bottom 50%
1765 The Exchange Se
Atlanta, GA 30339
(678) 594-8240
Gr: 6-12 | 927 students Student-teacher ratio: 13:1 Minority enrollment: 77%
Rank: #1717.
Osborne High School
(Math: 15% | Reading: 27%)
Rank:
3/
10
Bottom 50%
2451 Favor Rd Sw
Marietta, GA 30060
(770) 437-5900
Gr: 9-12 | 2,790 students Student-teacher ratio: 16:1 Minority enrollment: 96%
Rank: #1818.
Devereux Ackerman Academy
(Math: ≤10% | Reading: ≤20%)
Rank:
1/
10
Bottom 50%
1291 Stanley Rd Nw
Kennesaw, GA 30152
(770) 427-0147
Gr: K-12 | 54 students Student-teacher ratio: 4:1 Minority enrollment: 70%

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Quick Facts (2026)

  • District size: 110 schools
  • Grades: PK-12
  • Enrollment: 105,738 students
  • Student-Teacher Ratio: 14:1
  • Minority Enrollment: 68%
  • : 88% (Top 50% in GA)
  • : Top 20%
  • : 47% (Top 20%)
  • : 50% (Top 20%)
  • : 47% (Top 30%)
  • Source: National Center for Education Statistics (NCES), GA Dept. of Education

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