The state's average score on the exam was 1,453 that's seven points lower than last year and 24-points lower than 2006.
The state lags behind the national average score of 1,509.
One reason for Georgia's decline is that the number of test-takers increased to 66,000 from last year's 63,000.
Usually, states with larger pools of test-takers fare worse in their scores.
The biggest decline for the state was in writing, where students scored 475 compared to last year's 479.