Cobb County schools ranked by test score
Latest Georgia Milestones year (2024-25). 26 schools in Cobb County, Georgia with reported Science scores. Georgia state average: 40.7%.
| Rank | School | Level | Science | vs state |
|---|---|---|---|---|
| 1 | McClure Middle School Kennesaw · Cobb County | Middle | 62.6% | +21.9pp |
| 2 | Dickerson Middle School Marietta · Cobb County | Middle | 59.0% | +18.3pp |
| 3 | Lovinggood Middle School Powder Springs · Cobb County | Middle | 56.2% | +15.5pp |
| 4 | Dodgen Middle School Marietta · Cobb County | Middle | 54.4% | +13.7pp |
| 5 | Hightower Trail Middle School Marietta · Cobb County | Middle | 53.0% | +12.3pp |
| 6 | Mabry Middle School Marietta · Cobb County | Middle | 53.0% | +12.3pp |
| 7 | Cooper Middle School Austell · Cobb County | Middle | 50.9% | +10.2pp |
| 8 | Lost Mountain Middle School Kennesaw · Cobb County | Middle | 49.1% | +8.4pp |
| 9 | Simpson Middle School Marietta · Cobb County | Middle | 46.2% | +5.5pp |
| 10 | Daniell Middle School Marietta · Cobb County | Middle | 42.1% | +1.4pp |
| 11 | Durham Middle School Acworth · Cobb County | Middle | 36.2% | -4.5pp |
| 12 | Floyd Middle School Mableton · Cobb County | Middle | 31.1% | -9.6pp |
| 13 | Marietta Middle School Marietta · Marietta City | Middle | 28.4% | -12.3pp |
| 14 | Barber Middle School Acworth · Cobb County | Middle | 26.5% | -14.2pp |
| 15 | Pine Mountain Middle School Kennesaw · Cobb County | Middle | 25.0% | -15.7pp |
| 16 | East Cobb Middle School Marietta · Cobb County | Middle | 24.3% | -16.4pp |
| 17 | Betty Gray Middle School Mableton · Cobb County | Middle | 24.0% | -16.7pp |
| 18 | Lindley Middle School Mableton · Cobb County | Middle | 23.1% | -17.6pp |
| 19 | Griffin Middle School Smyrna · Cobb County | Middle | 21.5% | -19.2pp |
| 20 | Palmer Middle School Kennesaw · Cobb County | Middle | 18.8% | -21.9pp |
| 21 | Smitha Middle School Marietta · Cobb County | Middle | 18.8% | -21.9pp |
| 22 | Awtrey Middle School Kennesaw · Cobb County | Middle | 17.4% | -23.3pp |
| 23 | Garrett Middle School Austell · Cobb County | Middle | 17.1% | -23.6pp |
| 24 | Tapp Middle School Powder Springs · Cobb County | Middle | 13.9% | -26.8pp |
| 25 | Campbell Middle School Smyrna · Cobb County | Middle | 12.0% | -28.7pp |
| 26 | Pearson Middle School Marietta · Cobb County | Middle | 11.3% | -29.4pp |
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.