Total enrollment
105,738
-1,641 (-2%) vs SY 2020-21
110 schools in Cobb County
Georgia · 105,738 students · 8 cities
Public K-12 education in Cobb County runs across 110 schools with combined enrollment of about 105,738 students, averaging 961 per school.
4-year change in Cobb County
SY 2020-21 vs SY 2024-25School count
110
+1 (+1%) vs SY 2020-21
Source: NCES Common Core of Data, enrollment-weighted demographic averages
How Cobb County ranks
Among districts| Measure | This district | In Georgia | In the US |
|---|---|---|---|
| State test proficiency ranked highest first | 51.5% | #29 of 160 | N/A |
| Enrollment ranked largest first | 105,738 | #2 of 172 | #25 of 9,234 |
| Number of schools ranked most first | 110 | #3 of 172 | N/A |
| Students per teacher ranked fewest first | 14.2:1 | #95 of 172 | #4,575 of 9,044 |
| Free or reduced-price lunch share ranked highest first | 52.6% | #146 of 172 | #3,788 of 8,164 |
| Diversity index ranked most diverse first | 73.3% | #1 of 160 | #130 of 6,853 |
Districts need at least 2 schools and 500 students to be ranked. Test proficiency is ranked within the state only, since each state gives a different test. Each rank links to the full list.
Inside Cobb County
State test results across the district's 106 scored schools run from Timber Ridge Elementary School at 84.1% proficient to Riverside Elementary School at 15.9%, a gap of 68.2 points. That is the 10th widest gap among 107 Georgia districts with four or more scored schools.
Since 2017-18, the 108 district schools that reported both years went from 111,096 to 104,005 students (down 6%) and from 7,130 to 7,333 full-time teachers (up 3%), as of 2024-25.
Proficient is the average share of students meeting the state standard across each school's state tests in 2023-24 and 2024-25; schools with fewer than 100 students and schools serving specialized populations are left out. Staffing figures come from the NCES Common Core of Data and count only schools that reported students and teachers in both years.
| Name | City | Level | Grades | Enrollment |
|---|---|---|---|---|
| Riverside Elementary School | Mableton | Elementary | PK-05 | 471 |
| Nicholson Elementary School | Marietta | Elementary | PK-05 | 413 |
| Keheley Elementary School | Marietta | Elementary | PK-05 | 393 |
| Milford Elementary School | Marietta | Elementary | PK-05 | 389 |
| Austell Elementary School | Austell | Elementary | PK-05 | 367 |
| LaBelle Elementary School | Marietta | Elementary | PK-05 | 339 |
| Argyle Elementary School | Smyrna | Elementary | PK-05 | 333 |
| Belmont Hills Elementary School | Smyrna | Elementary | PK-05 | 267 |
| McCall Primary School | Acworth | Elementary | PK-01 | 265 |
| Devereux Ackerman Academy | Kennesaw | Combined | KG-12 | 54 |
About Cobb County
Cobb County operates 110 public schools across Georgia, collectively enrolling roughly 105,738 students.
Looking at the level breakdown, Cobb County comprises 66 elementary, 26 middle, 17 high schools, and 1 combined or other.
Per-school enrollment averages around 961 in this district, noticeably above the Georgia typical of 748.
Trend over the past 4 years. Combined enrollment now sits at 105,738 students, stayed largely flat from the 107,379 reported in SY 2020-21. Over that span, Cobb County gained 1 school, going from 109 to 110.
In the discussion threads here, the community for Cobb County discusses enrollment trends, district policy changes, and bus-route updates. Anyone with firsthand knowledge of these schools is welcome to weigh in.