The purpose of this study is to investigate the usage ability of conflict management styles by high school principals in Konya, Turkey, based on their perceptions. For this purpose, Form B of Rahim Organisational Conflict Inventory (ROCI) II questionnaire is used. Five types of conflict management styles have been tested - cooperation, identifying the other, domination, prevention and conciliation. The results of the survey reveal that there are differences in patterns of conflict management styles among high school principals according to age, sex and type of school. The purpose of the study is to determine the correct reason of conflict and selection of an appropriate method, which is helpful for sound conflict management. Besides the personality of the principals in high school, they should also be capable at problem-solving, be efficient communicators and remain unbiased.