After School (애프터스쿨; stylized as AFTER SCHOOL) is a South Korean female group based on an admission and graduation concept formed by Pledis Entertainment in 2009. The group is known for its unconventional yet powerful visual performances incorporating different styles such as drumming, tap dancing, and pole dancing—ranking #5 in "Top 10 K-Pop Girl Groups of the Past Decade". Since 2015, After School has been on an indefinite hiatus as members withdrew from the group focusing on their separate careers. Though, they have not officially disbanded. After School debuted in January 2009 with their single "AH!" on Music Core.
After School is notable for the release of the song "Because of You" which was a commercial and critical success, winning a triple crown on Inkigayo in 2009. Follow-up singles: DIVA, BANG!, Shampoo, Flashback, and First Love contributed to the group's popularity.
On June 3, 2021, members Jungah, Jooyeon, Bekah, Raina, and Kahi reunited as AFTER SCHOOL as a guest appearance on SBS' internet program MMTG for the Hidden Gems segment. After deciding two songs, the members performed BANG! and DIVA as their reunion performance on June 12.