In this study, it is aimed to determine the ethical and unethical leadership behaviors of school administrators and the factors that provide or cause these behaviors according to the opinions of teachers. Phenomenology, one of the qualitative research techniques, was used in the study. A total of 18 teachers working in different primary, secondary and high schools participated in the research. According to the findings, it is seen that the teachers mostly stated the opinion of having ethical and moral values and acting fairly as ethical leadership characteristics. Teachers expressed their views as discriminating, violating regulations, and ignoring teachers' wishes and needs as unethical leadership characteristics. Among the factors that enable managers to display ethical leadership behaviors, having ethical and moral values and fear of being complained are expressed the most. Behaviors that cause administrators to display unethical leadership are determined as greed to gain power, greed for acquiring an environment, lack of merit, desire to protect their position, pressure from parents and upper bureaucracy, the school's current unethical climate, and the concern to maintain discipline.