The aim of this study is to examine the discipline and the counter-school culture in North Korean middle school. This study focuses on the classroom discipline and youth organizations as major mechanisms of discipline. Collective and authoritative rules are compulsively enforced in class and through the activities of youth organizations even though they are officially regarded and recommended as students' self-governing rules. Examining the real school culture reveals that schoolboys transform the imposed school discipline and make their own counter-school culture. Especially, schoolboys organize gangs and do mob violence to each other. Unlike the formal youth organization, the informal gang is the real network in which students make their school life and express their own identities. Nevertheless, the formal ideology of school does not weakened or overthrown by the counter-school culture. The students' resistance stays behind in a moderate and safe form.