Gwinnett County's school system saw a slight decline in an annual state report released Thursday that examines academic performance.

Gwinnett had an overall score of 82.4 on a 100 point scale (with up to 10 possible bonus points) on the state’s 2017 College and Career Ready Performance Index. Gwinnett had an average of 83 points in 2016. Gwinnett’s score was better than the average statewide total of 75 points.

The Buford city school district had an average score of 91.9.

Atlanta's school system had large gains from last year, but was still below the statewide average. Fulton County's elementary and high schools had average scores above the statewide  average, but its middle schools were below the statewide average.

Parents should read the results for their schools with caution because a 2016 state law mandated a reduction in the number of tests. State officials said the effect will be negligible at the state level and in the overall scores of larger school districts. They could be more pronounced in smaller schools or school districts, where the results in one classroom could have a relatively larger effect.

Please return to www.myajc.com throughout the day to read more about the results.