As Gwinnett County continued to see more students enter its system, South Gwinnett's district was split in half in 2000, when Grayson High School was "re-opened" at a new facility in Loganville.

The school was ranked 159th in the state and 12th (of 16) in Gwinnett County in the 2010 GPPF Report Card.

[2] The school's mock trial team won the National High School Mock Trial Championship in 1995, held in Denver, Colorado.

[3] South Gwinnett High School made Adequate Yearly Progress (AYP) in 2009.

Under the No Child Left Behind act, a school makes AYP if it achieves the minimum levels of improvement determined by the state of Georgia in terms of student performance and other accountability measures.