Cobb County schools ranked by test score
Latest Georgia Milestones year (2024-25). 28 schools in Cobb County, Georgia with reported Mathematics scores. Georgia state average: 44.6%.
| Rank | School | Level | Mathematics | vs state |
|---|---|---|---|---|
| 1 | Dickerson Middle School Marietta · Cobb County | Middle | 91.0% | +46.4pp |
| 2 | Dodgen Middle School Marietta · Cobb County | Middle | 81.7% | +37.1pp |
| 3 | Hightower Trail Middle School Marietta · Cobb County | Middle | 79.2% | +34.6pp |
| 4 | Mabry Middle School Marietta · Cobb County | Middle | 76.2% | +31.6pp |
| 5 | Lost Mountain Middle School Kennesaw · Cobb County | Middle | 74.5% | +30.0pp |
| 6 | Simpson Middle School Marietta · Cobb County | Middle | 71.2% | +26.6pp |
| 7 | McClure Middle School Kennesaw · Cobb County | Middle | 68.3% | +23.7pp |
| 8 | Lovinggood Middle School Powder Springs · Cobb County | Middle | 64.5% | +19.9pp |
| 9 | Durham Middle School Acworth · Cobb County | Middle | 63.9% | +19.3pp |
| 10 | McCleskey Middle School Marietta · Cobb County | Middle | 56.8% | +12.2pp |
| 11 | Pine Mountain Middle School Kennesaw · Cobb County | Middle | 50.6% | +6.0pp |
| 12 | Marietta Middle School Marietta · Marietta City | Middle | 49.7% | +5.1pp |
| 13 | Daniell Middle School Marietta · Cobb County | Middle | 49.6% | +5.0pp |
| 14 | Griffin Middle School Smyrna · Cobb County | Middle | 47.8% | +3.2pp |
| 15 | Cooper Middle School Austell · Cobb County | Middle | 47.3% | +2.7pp |
| 16 | Tapp Middle School Powder Springs · Cobb County | Middle | 44.6% | -0.0pp |
| 17 | Awtrey Middle School Kennesaw · Cobb County | Middle | 43.2% | -1.4pp |
| 18 | Campbell Middle School Smyrna · Cobb County | Middle | 40.6% | -3.9pp |
| 19 | Marietta Sixth Grade Academy Marietta · Marietta City | Middle | 40.0% | -4.6pp |
| 20 | Palmer Middle School Kennesaw · Cobb County | Middle | 38.6% | -6.0pp |
| 21 | Barber Middle School Acworth · Cobb County | Middle | 38.5% | -6.0pp |
| 22 | East Cobb Middle School Marietta · Cobb County | Middle | 36.2% | -8.3pp |
| 23 | Floyd Middle School Mableton · Cobb County | Middle | 33.1% | -11.5pp |
| 24 | Garrett Middle School Austell · Cobb County | Middle | 32.4% | -12.2pp |
| 25 | Betty Gray Middle School Mableton · Cobb County | Middle | 30.8% | -13.8pp |
| 26 | Smitha Middle School Marietta · Cobb County | Middle | 28.7% | -15.9pp |
| 27 | Lindley Middle School Mableton · Cobb County | Middle | 28.6% | -15.9pp |
| 28 | Pearson Middle School Marietta · Cobb County | Middle | 17.6% | -27.0pp |
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.