This study, which was carried out to identify the unwanted behaviors of school administrators according to teachers’ ideas, was designed in the qualitative research method. Within the scope of the study, the opinions of 52 teachers were collected who work at primary, secondary and high schools in the province of Erzincan. The study data were obtained by means of a semi-structured interview form devised by the researcher. The data obtained were analyzed through content analysis, which is one of the qualitative data analysis approaches. Initially, the data obtained in each interview were coded. The coding process was completed by selecting the expression in the interviews and recording the suitable code as an explanation. Following the completion of the coding process, the thematization took place and the obtained codes were grouped under suitable themes. Afterwards, supra-themes were formed taking into consideration the similarities of these sub-themes that were formed. The teachers participating in the study expressed a total of 140 opinions. According to the study results, the behavior that the teachers expressed the most frequently among the unwanted school administrator behaviors was the lack of leadership skills. Moreover, the teachers also frequently expressed the opinions of the lack of problem solving skills, weak administration, the inadequacy of communication skills, and evading responsibility.