The purpose of this study is to determine the degree of application of the servant leadership principles as well as the degree of job satisfaction as perceived by school teachers and, to examine the correlation between these two variables. The servant leadership is a form of leadership that is linked to high percentages of teachers' job satisfaction; however, it has not received the researchers' attention and lacks adequate empirical foundation. In Greece, only few studies have analysed this leadership style and, this study is the first to be conducted in a primary education environment. More specifically, the sample of the research consisted of 141 teachers from 20 public primary schools in the prefecture of Trikala in central Greece and as a measurement tool we used the OLA questionnaire (Laub, 1999 -edition for educational units), which we adjusted to the needs of the present research. The results revealed a positive trend towards the degree of perception of the characteristics of servant leadership by the majority of sample teachers. It has also been found that sample teachers receive an amount of a lot to a great deal of satisfaction from their work. Moreover, the research has shown a statistically significant powerful positive relationship between job satisfaction and the perceived application of the principles of servant leadership, and that the perceived application of the principles of servant leadership could be a predictive factor of teachers' job satisfaction. The above results demonstrate the positive contribution of servant leadership to teachers' job satisfaction, which is linked to the efficiency of the educational work of schools.