School teachers have a hard time to discipline students and they often don't even have the will to do so. The authority of the teachers in the classroom breaks down and this causes serious social issues. The National…
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Kim Moo-yul
Na Hwa-jin
Lee Sung-min
Choi Kang-seok
Jin Ki-joo
Im Han-rim
P.O
Bong Geun-dae