Georgia’s graduation rate reached an all-time high this year, data shows.

The rate grew 6 percentage points since last year to reach 78.8 percent.

Officials have attributed this increase to cleaner records, the retirement of the Georgia High School Graduation Test and new data systems that identify struggling kids early.

Despite the significant increase in the state's graduation rate, tens of thousands of students are still failing to earn a diploma.

Click here to learn the 2015 top 10 Georgia high school with the highest graduation rates.

The average graduation rate for 25 DeKalb County high schools was 71 percent, up tremendously from 57 percent in 2012.

DeKalb County high schools with the highest graduation rates in 2015

1. DeKalb School of the Arts (100%)

2. DeKalb Early College Academy (98%)

3. Arabia Mountain High School (97%)

4. Tucker High School (87%)

5. Chamblee Charter High School (86%)