After seven years in the group, Jung Ah will be "graduating" and leaving the group "After School.

According to Pledis Entertainment, Jung Ah's contract with the agency has ended and she has decided to leave the company and girl group.

Jung Ah debuted through After School in 2009 and even served as the leader of the group falling the departure of member Kahi. She is the fourth "graduate" of the group, following Soyoung, Bekah, and Kahi.