The purpose of this study is to find out how middle and high school girls show their clothing attitudes and their life-style, clothing behavior, use their ornaments according to demographic variables. The subject of this study consists of 345 middle and high school girls living in Chung-Nam Province and Taejon Metropolitan City. SPSS/PC+program was utilized to calculate frequency(N), mean value(M) and standard deviation(SD) for statistical analysis. Differences among the populations are examined through t-test, F-test and X2-test. The results of this study are as follow: 1. Correlation between the life style and demographic variables. Especially, life-style has significant difference(p<. 05) according to type of school, middle school girls have high tendency in the type of modern and fashion. Life-style has significant difference(p< .01) according to level of achievement studying, high level girls has high tendency in the type of practical and secure. 2. Correlation between the clothing behavior and demographic variables. According to type of school, middle school girls showed higher than high school girls in clothing conformity and clothing aesthetics. According to level of achievement studying, high level girls have high tendency in clothing conformity and clothing modesty. 3. Correlation between the use their ornaments and demographic variables. Buying the ornaments, higher-level achievement studying girl s get information in show window, but lower-level achievement studying girl s get information in TV or raido. The use of ornaments according to the site of school, most of school girls who live in small city or town use the ornaments as usual school life, but school girls who liven in big city use the ornaments to look good on their clothes. Following suggestions can be made based on the discussions above: It is necessary for us to have correct understanding about the correlation between the ornaments and clothing of school girls in order to lead them to have appropriate clothing behavior. Furtheromore, it is required to construct a bridge linking a course of study to rational habits guidance which will provide us more appropriate tools for clothing behavior guidance.