2011 Korean Drama about aspiring high school students that audition for and are then selected to attend Kirin Performing Arts.
The main characters in this interestingly REFRESHING K-doh were Suzy as Go Hye mi, Kim Soo hyun as Song Sam dong, Taecyeon as Jin gook / Hyun Shi hyuk, Ham Eun jung as Yoon Baek hee, Wooyoung as Jason, and IU as Kim Pil sook.
By interesting, I mean that for a 'high school' referenced...