The purpose of this study was to investigate nutritional knowledge, nutrition attitude and food preference among middle school students and to evaluate the effect of nutrition deucation in middle school. The survey was conducted from June 15, to June 25, 1993 by questionnaires which was composed of ntrition knowledge test, nutrition attitude test and food preference test. The subjects of this study were composed of 106 male and 105 female students of middle school. The results obtained were summarized as follows: Nutrition knowledge score Nutrition Knowledge score Nutrition knowledge score of female group was significantly higher than that of male group at P<0.001 Nutrition Attitude Score Nutrition Attituds Score of female group was significantly higher than that of male group at P<0.001 Correlations between nutrition knowledge and nutrition attitude scores in both group were significant Food Preferences Preferences for pork cutlet, hot dog, chicken, beef, kim chi, cooked rice, ptoato were high in both groups.