Cobb County schools ranked by test score
Latest Georgia Milestones year (2024-25). 116 schools in Cobb County, Georgia with reported Science scores. Georgia state average: 40.7%.
| Rank | School | Level | Science | vs state |
|---|---|---|---|---|
| 51 | Baker Elementary School Acworth · Cobb County | Elementary | 42.6% | +1.9pp |
| 52 | Daniell Middle School Marietta · Cobb County | Middle | 42.1% | +1.4pp |
| 53 | Teasley Elementary School Smyrna · Cobb County | Elementary | 41.8% | +1.1pp |
| 54 | Sedalia Park Elementary School Marietta · Cobb County | Elementary | 41.3% | +0.6pp |
| 55 | Hickory Hills Elementary School Marietta · Marietta City | Elementary | 41.0% | +0.3pp |
| 56 | Austell Elementary School Austell · Cobb County | Elementary | 40.7% | +0.0pp |
| 57 | Bells Ferry Elementary School Marietta · Cobb County | Elementary | 40.6% | -0.1pp |
| 58 | Smyrna Elementary School Smyrna · Cobb County | Elementary | 39.9% | -0.8pp |
| 59 | Acworth Elementary School Acworth · Cobb County | Elementary | 39.8% | -0.9pp |
| 60 | Keheley Elementary School Marietta · Cobb County | Elementary | 39.5% | -1.2pp |
| 61 | McEachern High School Powder Springs · Cobb County | High | 39.4% | -1.3pp |
| 62 | Nickajack Elementary School Smyrna · Cobb County | Elementary | 39.1% | -1.6pp |
| 63 | Chalker Elementary School Kennesaw · Cobb County | Elementary | 38.8% | -1.9pp |
| 64 | Lewis Elementary School Kennesaw · Cobb County | Elementary | 38.7% | -2.0pp |
| 65 | Blackwell Elementary School Marietta · Cobb County | Elementary | 38.4% | -2.3pp |
| 66 | Wheeler High School Marietta · Cobb County | High | 37.7% | -3.0pp |
| 67 | Sprayberry High School Marietta · Cobb County | High | 36.4% | -4.3pp |
| 68 | Durham Middle School Acworth · Cobb County | Middle | 36.2% | -4.5pp |
| 69 | Clarkdale Elementary School Austell · Cobb County | Elementary | 34.9% | -5.8pp |
| 70 | Dowell Elementary School Marietta · Cobb County | Elementary | 34.5% | -6.2pp |
| 71 | Park Street Elementary School Marietta · Marietta City | Elementary | 33.3% | -7.4pp |
| 72 | Clay-Harmony Leland Elementary School Mableton · Cobb County | Elementary | 31.9% | -8.8pp |
| 73 | Marietta High School Marietta · Marietta City | High | 31.8% | -8.9pp |
| 74 | Sanders Elementary School Austell · Cobb County | Elementary | 31.2% | -9.5pp |
| 75 | Floyd Middle School Mableton · Cobb County | Middle | 31.1% | -9.6pp |
| 76 | Russell Elementary School Smyrna · Cobb County | Elementary | 29.7% | -11.0pp |
| 77 | Pitner Elementary School Acworth · Cobb County | Elementary | 29.3% | -11.4pp |
| 78 | Marietta Middle School Marietta · Marietta City | Middle | 28.4% | -12.3pp |
| 79 | LaBelle Elementary School Marietta · Cobb County | Elementary | 28.2% | -12.5pp |
| 80 | Varner Elementary School Powder Springs · Cobb County | Elementary | 27.3% | -13.4pp |
| 81 | Argyle Elementary School Smyrna · Cobb County | Elementary | 27.1% | -13.6pp |
| 82 | Barber Middle School Acworth · Cobb County | Middle | 26.5% | -14.2pp |
| 83 | Bryant Elementary School Mableton · Cobb County | Elementary | 25.4% | -15.3pp |
| 84 | Sawyer Road Elementary School Marietta · Marietta City | Elementary | 25.3% | -15.4pp |
| 85 | Pine Mountain Middle School Kennesaw · Cobb County | Middle | 25.0% | -15.7pp |
| 86 | East Cobb Middle School Marietta · Cobb County | Middle | 24.3% | -16.4pp |
| 87 | Betty Gray Middle School Mableton · Cobb County | Middle | 24.0% | -16.7pp |
| 88 | Hendricks Elementary School Powder Springs · Cobb County | Elementary | 23.4% | -17.3pp |
| 89 | Birney Elementary School Marietta · Cobb County | Elementary | 23.3% | -17.4pp |
| 90 | Lindley Middle School Mableton · Cobb County | Middle | 23.1% | -17.6pp |
| 91 | Fair Oaks Elementary School Marietta · Cobb County | Elementary | 22.8% | -17.9pp |
| 92 | Powers Ferry Elementary School Marietta · Cobb County | Elementary | 22.5% | -18.2pp |
| 93 | Milford Elementary School Marietta · Cobb County | Elementary | 22.4% | -18.3pp |
| 94 | Pebblebrook High School Mableton · Cobb County | High | 22.4% | -18.3pp |
| 95 | Riverside Elementary School Mableton · Cobb County | Elementary | 22.4% | -18.3pp |
| 96 | Griffin Middle School Smyrna · Cobb County | Middle | 21.5% | -19.2pp |
| 97 | Brumby Elementary School Marietta · Cobb County | Elementary | 21.3% | -19.4pp |
| 98 | City View Elementary School Mableton · Cobb County | Elementary | 21.2% | -19.5pp |
| 99 | Osborne High School Marietta · Cobb County | High | 20.4% | -20.3pp |
| 100 | Belmont Hills Elementary School Smyrna · Cobb County | Elementary | 20.0% | -20.7pp |
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 Science 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.