After School (Hangul: 애프터스쿨), stylized as AFTERSCHOOL in Japan, is a South Korean girl group formed by Pledis Entertainment with an admissions and graduation concept. The group's current lineup consists of Raina, Nana, E-Young and Kaeun. As of September 2018, After School has had eleven members who have joined and "graduated" since their debut as a quintet in 2009.