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 17 Fulton County high schools was 85 percent, up from 79 percent in 2014.

Fulton County high schools with the highest graduation rates in 2015

1. Johns Creek High School (98%)

1. Northview High School (98%)

3. Chattahoochee High School (95%)

3. Milton High School (95%)

5. Alpharetta High School (94%)