The mascot for SGHS is the Titan, after retiring the Colonel, and the school colors are red and Columbia blue.

[5] In 1991 a black activist named Melvin "A'Vant" Thomas picketed the school since it had a flag resembling the battle flag of the Confederate States of America; for a period of almost two years he had written numerous letters to the GISD school board asking them to remove the mural.

A group of students voted against changing the school flag in August 1988 with African American resident M.T.

The president of the local chapter of the NAACP said the issue would not be over unless all symbolism referring to the Confederacy, including the fight song and a plantation mural, were removed.

[10] In 2020, the Garland ISD Board of Trustees unanimously voted to retire the Colonel mascot in favor of a new one following the approval of a $1.6 million rebrand.

South offers the following sports to its students: Baseball, Basketball, Football, Golf, Gymnastics, Power Lifting, Soccer, Softball, Tennis, Track/Cross Country, and Volleyball.

The Boys Varsity Basketball team made the playoffs the last 3 years (2017-2019) and advanced to the 2018 UIL State Semi-Finals under Coach Parker.

[16] •Band •Choir •Theatre •Drill Team (Varsity: Royal Legacies, Non-Varsity: Sapphires) •Art •Cheerleading •E-Sports Gaming League Cosmetology, Welding, Autobody Collision Repair and Auto Technology