Using the acquisition of United States citizenship as an indicator, Koreans have shown a remarkable degree of success in cultural and social adjustment to the mainstream of American society. Nevertheless, a certain amount of confusion and conflict is expected during their period of transition and adjustment. American teachers must be aware of the cultural background of their Korean students. The Korean culture is governed by five major ethical principles, based on Confucian teaching, defining codes of interpersonal relationships between father and son, elder and young, husband and wife, ruler and subject, and friends. Korean cultural differences are also apparent in non-verbal behaviors: expressions of thought, interpersonal relationships, manners and courtesies, privacy, gifts, and gestures. Given a better understanding and knowledge of the conflicts the Korean child and family are faced with, the American teacher can prove to be an invaluable aid to the student's full and constructive adjustment to the mainstream of American society. (MK)