Cobb County schools ranked by test score
Latest Georgia Milestones year (2024-25). 18 schools in Cobb County, Georgia with reported Science scores. Georgia state average: 40.7%.
| Rank | School | Level | Science | vs state |
|---|---|---|---|---|
| 1 | Pope High School Marietta · Cobb County | High | 86.9% | +46.2pp |
| 2 | Walton High School Marietta · Cobb County | High | 85.4% | +44.7pp |
| 3 | Kell High School Marietta · Cobb County | High | 83.1% | +42.4pp |
| 4 | North Cobb High School Kennesaw · Cobb County | High | 82.0% | +41.3pp |
| 5 | Lassiter High School Marietta · Cobb County | High | 80.1% | +39.4pp |
| 6 | Kennesaw Mountain High School Kennesaw · Cobb County | High | 79.7% | +39.0pp |
| 7 | Harrison High School Kennesaw · Cobb County | High | 76.8% | +36.1pp |
| 8 | Campbell High School Smyrna · Cobb County | High | 69.7% | +29.0pp |
| 9 | Hillgrove High School Powder Springs · Cobb County | High | 66.8% | +26.1pp |
| 10 | Allatoona High School Acworth · Cobb County | High | 60.0% | +19.3pp |
| 11 | McEachern High School Powder Springs · Cobb County | High | 39.4% | -1.3pp |
| 12 | Wheeler High School Marietta · Cobb County | High | 37.7% | -3.0pp |
| 13 | Sprayberry High School Marietta · Cobb County | High | 36.4% | -4.3pp |
| 14 | Marietta High School Marietta · Marietta City | High | 31.8% | -8.9pp |
| 15 | Pebblebrook High School Mableton · Cobb County | High | 22.4% | -18.3pp |
| 16 | Osborne High School Marietta · Cobb County | High | 20.4% | -20.3pp |
| 17 | South Cobb High School Austell · Cobb County | High | 17.2% | -23.5pp |
| 18 | Cobb Horizon High School Atlanta · Cobb County | High | 14.1% | -26.5pp |
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.