The Greenbrier High School mascot is the
panther with school colors of royal blue, black, and white.
Athletics The Greenbrier Panthers participate in various interscholastic activities in the 5A West Conference administered by the
Arkansas Activities Association. The school athletic activities include baseball, basketball (boys/girls), soccer (boys/girls), bowling, competitive cheer, cross country (boys/girls), football, golf (boys/girls), softball, swimming and diving (girls), tennis (boys/girls), volleyball, and wrestling (boy/girls). In 2012, Greenbrier won the state's Student Angler Federation (SAF) High School Fishing State Championship.
Clubs and traditions In 1995–96, first-year Greenbrier High School educator Tim Stephenson piloted a program that would go on to become the
EAST (Environmental And Spatial Technologies) Initiative, which has grown to more than 200 high schools in Arkansas and other states. ==Notable incidents==