The aim of this study is to determine the effective strategies for managing disruptive behaviors in a classroom-based on the opinions of teachers. In the present study, the qualitative case study methodology was used. The study was conducted with the participation of 19 female, 16 male teachers working at 7 different types of high schools (Anatolian High School, Science High School, Religious High School, etc.) located in Sanliurfa province, Karaköprü district. The participants were selected through the maximum variation sampling technique. The data of the study was collected from a total of 35 volunteer teachers; 5 from each high school, with different seniority (3-22 years) and different subjects (vocational and academic subjects). The data for this study was collected using a semi-structured interview and analyzed by content analysis. According to the opinions of the participants; two main themes were formed as a. preventive strategies (rule-setting, building a good student-teacher relationship, instructional interactions) and b. behavior control strategies (direct or indirect intervention, punishment, after the class talk, referral).