Oh! My School

Episode 20 (1x20)

Air date: Apr 02, 2011

Guests: Soyeon (T-ara), Lee Joon (MBLAQ), Yang Yo Seob (B2ST), Min (miss A), Simon D (Supreme Team), Hyosung (Secret), Chun Myung Hoon (NRG), Sul Woon Do, Kwanghee (ZE:A) & Siwan (ZE:A)