This Study primarily examined the validity of the Stges of Concern Questionnaire(SocQ; Hall, George, & Rutherford, 1977) which replaced the term ‘innovation’ with ‘inclusion’. Measuring the levels of concern on inclusion of secondary teachers, the usability of the questionnaire was considered in order to make suggestions for teacher training on inclusion simultaneously. To verify the validity of the SoCQ in Korean, the reliability, correlation, and exploratory factor analyses in the stages of concern were conducted. The Major finding of the study were: 1. The item-total reliability was Cronbach\'s alpha .94, which was high. The coefficient alphas of Each Stages of concern indicated satisfactory internal consistency, ranged from .65 to .86. 2. There were positive and statistically significant correlations between the stages excepts the stage 0(awareness), which means the indifference about inclusion. This indicated that the developmental sequence of stages, assumed by Hall and her colleagues(1977), is not supported in the study. 3. The exploratory factor analyses with each stages resulted in that the factor loaded in each stages was one. This indicates that the translated test consists if the seven factors which the original model of questionnaire suggested. Key words : inclusion, disabilities, teacher attitude, Stages of Concern Questionnaire