The aim of this research is to examine psychometric properties of the Turkish form of Moral Disengagement Scale developed by Albert Bandura and his friends. The scale measures disengagement from the morally accepted behaviors. High scores from the scale show the high level of moral disengagement. The scale was developed based on the moral disengagement theory and theory is grounded on the eight socio-cognitive mechanisms which makes moral disengagement possible. The sample consisted of high school students from variety of schools in İstanbul. Social Likeness Scale, Dark Triad Scale, KA-Si Empathic Tendency Scale, Anomalous Behavior Scale, Student Alienation Scale, Basic Empathy Scale and Inventory of Cognitions Related Bullying were used as data collection instruments. Lisrel program was used in confirmatory factor analysis of Moral Disengagement Scale. It is concluded that Moral Disengagement Scale can be used in order to measure moral disengagement tendency of high school students with 32 items on 3 point Likert scale as it is in the original form.