Cobb County schools ranked by test score
Latest Georgia Milestones year (2024-25). 118 schools in Cobb County, Georgia with reported Mathematics scores. Georgia state average: 44.6%.
| Rank | School | Level | Mathematics | vs state |
|---|---|---|---|---|
| 51 | Keheley Elementary School Marietta · Cobb County | Elementary | 50.5% | +5.9pp |
| 52 | Teasley Elementary School Smyrna · Cobb County | Elementary | 50.4% | +5.8pp |
| 53 | Wheeler High School Marietta · Cobb County | High | 49.9% | +5.3pp |
| 54 | Marietta Middle School Marietta · Marietta City | Middle | 49.7% | +5.1pp |
| 55 | Daniell Middle School Marietta · Cobb County | Middle | 49.6% | +5.0pp |
| 56 | Hickory Hills Elementary School Marietta · Marietta City | Elementary | 48.7% | +4.1pp |
| 57 | Griffin Middle School Smyrna · Cobb County | Middle | 47.8% | +3.2pp |
| 58 | Marietta High School Marietta · Marietta City | High | 47.7% | +3.1pp |
| 59 | Nicholson Elementary School Marietta · Cobb County | Elementary | 47.3% | +2.7pp |
| 60 | Cooper Middle School Austell · Cobb County | Middle | 47.3% | +2.7pp |
| 61 | Nickajack Elementary School Smyrna · Cobb County | Elementary | 46.3% | +1.8pp |
| 62 | Sawyer Road Elementary School Marietta · Marietta City | Elementary | 46.0% | +1.4pp |
| 63 | Baker Elementary School Acworth · Cobb County | Elementary | 46.0% | +1.4pp |
| 64 | Hayes Elementary School Kennesaw · Cobb County | Elementary | 45.1% | +0.5pp |
| 65 | Blackwell Elementary School Marietta · Cobb County | Elementary | 45.0% | +0.5pp |
| 66 | Smyrna Elementary School Smyrna · Cobb County | Elementary | 45.0% | +0.4pp |
| 67 | Acworth Elementary School Acworth · Cobb County | Elementary | 44.6% | +0.0pp |
| 68 | Tapp Middle School Powder Springs · Cobb County | Middle | 44.6% | -0.0pp |
| 69 | Sprayberry High School Marietta · Cobb County | High | 43.6% | -1.0pp |
| 70 | Varner Elementary School Powder Springs · Cobb County | Elementary | 43.6% | -1.0pp |
| 71 | Pitner Elementary School Acworth · Cobb County | Elementary | 43.5% | -1.1pp |
| 72 | Awtrey Middle School Kennesaw · Cobb County | Middle | 43.2% | -1.4pp |
| 73 | Clay-Harmony Leland Elementary School Mableton · Cobb County | Elementary | 42.9% | -1.7pp |
| 74 | Chalker Elementary School Kennesaw · Cobb County | Elementary | 42.8% | -1.7pp |
| 75 | Clarkdale Elementary School Austell · Cobb County | Elementary | 41.9% | -2.7pp |
| 76 | Fair Oaks Elementary School Marietta · Cobb County | Elementary | 41.3% | -3.2pp |
| 77 | Austell Elementary School Austell · Cobb County | Elementary | 40.7% | -3.9pp |
| 78 | Campbell Middle School Smyrna · Cobb County | Middle | 40.6% | -3.9pp |
| 79 | Marietta Sixth Grade Academy Marietta · Marietta City | Middle | 40.0% | -4.6pp |
| 80 | Campbell High School Smyrna · Cobb County | High | 38.6% | -6.0pp |
| 81 | Palmer Middle School Kennesaw · Cobb County | Middle | 38.6% | -6.0pp |
| 82 | Barber Middle School Acworth · Cobb County | Middle | 38.5% | -6.0pp |
| 83 | Powder Springs Elementary School Powder Springs · Cobb County | Elementary | 38.5% | -6.1pp |
| 84 | Sedalia Park Elementary School Marietta · Cobb County | Elementary | 38.1% | -6.4pp |
| 85 | Bells Ferry Elementary School Marietta · Cobb County | Elementary | 36.8% | -7.8pp |
| 86 | East Cobb Middle School Marietta · Cobb County | Middle | 36.2% | -8.3pp |
| 87 | Hendricks Elementary School Powder Springs · Cobb County | Elementary | 36.1% | -8.5pp |
| 88 | Birney Elementary School Marietta · Cobb County | Elementary | 35.9% | -8.7pp |
| 89 | Sanders Elementary School Austell · Cobb County | Elementary | 35.1% | -9.5pp |
| 90 | Pebblebrook High School Mableton · Cobb County | High | 34.7% | -9.9pp |
| 91 | Park Street Elementary School Marietta · Marietta City | Elementary | 34.0% | -10.6pp |
| 92 | Floyd Middle School Mableton · Cobb County | Middle | 33.1% | -11.5pp |
| 93 | Dowell Elementary School Marietta · Cobb County | Elementary | 32.9% | -11.6pp |
| 94 | Bryant Elementary School Mableton · Cobb County | Elementary | 32.9% | -11.7pp |
| 95 | Argyle Elementary School Smyrna · Cobb County | Elementary | 32.9% | -11.7pp |
| 96 | Garrett Middle School Austell · Cobb County | Middle | 32.4% | -12.2pp |
| 97 | Norton Park Elementary School Smyrna · Cobb County | Elementary | 32.4% | -12.2pp |
| 98 | Milford Elementary School Marietta · Cobb County | Elementary | 32.3% | -12.3pp |
| 99 | South Cobb High School Austell · Cobb County | High | 32.0% | -12.6pp |
| 100 | Betty Gray Middle School Mableton · Cobb County | Middle | 30.8% | -13.8pp |
About this ranking
Schools are ranked by the percentage of students who scored at or above the Georgia Milestones % Proficient or Distinguished threshold on the latest available Georgia Milestones Mathematics test (school year 2024-25). Only public schools in Cobb County, Georgia with a reasonable cohort size are shown. A higher percentage is better.
The comparison column shows the gap to the Georgia statewide enrollment-weighted average. To compare against neighboring counties, use the full Georgia ranking.