The study was carried out in Adana and Bursa with fifteen teachers who are exposed to mobbing by their principals in 2013-2014 academic years. Content analysis technique which is often preferred was used in this study. Homogeneous sampling method which is one of the purposeful sampling methods has been used in this research. Homogeneous sampling is forming the sample of the situation or homogeneous subgroup in the population related to research problem. The data obtained from written interview forms were anaylzed using content analysis technique by idetifying themes and subthemes. Findings were compared to another academic‟s analysis. At the end of the study, the situations which mobbing causes were revealed according to the participant teachers‟ opinions. According to the teachers‟ opinions, the school principals who apply mobbing demonstrate not only physical behaviours like hateful and scary look, avoiding eye contact, but also psychological behaviours like unhappiness and nervousness. It has been determined that these kind of principals do harm to the schools.