The purpose of this study was to make clear the differences of middle and high school students‘ clothing attitude, clothing regulation attitude and influential groups in putting on clothing according to their demographic variables and scholar score. For clothing attitude and clothing regulation attitude, I examined 5 variables of conformity, individuality, modesty, fashion, clothing importance and 2 variables of refusal against regulation from school and parent, The influential groups were divided into ‘significant others’ of teacher, father, mother, other sex friend, same sex friend, and senior and ‘model group’ of teacher, parent, friend and mass media star. My subject was 1050 middle and high school students who are resident in Seoul; sample groups were selected, considered their resident area, gender and the kind of school. As for the analysing method, I adopted SPSS/PC＋Program to practice t-test, one-way ANOVA, Duncan’s Multi-Range Test. The results are as follows: There was difference in clothing attitude according to the sex and school except nonconformity. Conformity and clothing importance were higher for than boys in both middle and high schools, In particular, middle school boys' clothing importance were lowest. Compared with middle and high school boys, middle school girls considered fashion most seriously and modesty least, For both sexes, the lower the scholar score, the worst the modesty, While the lower the scholar score, the higher the fashion, the refusals against clothing regulation from school and parent for boys, but the fashion and the refusals against regulation from school for girls, As for boy, the lower his father’s educational career was, the higher the clothing importance was, and the lower his mother‘s educational career, the fiercer he refused against clothing regulation from school. As for the influence on significant other/model groups when wearing clothing, girls were more influenced than boys.