The Georgia Department of Education has released the Georgia High School Graduation Tests (GHSGT) results for 2011. The overall passing rate for the state was 74%. Cherokee County was the highest-performing metro county with 90% passing, while Atlanta Public Schools was the lowest at 58% passing. Here's the breakdown by metro school district as provided by the Atlanta Journal-Constitution.
Atlanta Public Schools 58%
Cherokee County 90%
Clayton County 61%
Cobb County 86%
DeKalb County 65%
Douglas County 63%
Fayette County 87%
Forsyth County 88%
Fulton County 81%
Gwinnett County 84%
Hall County 79%
Paulding County 76%