The purpose of this study was to determine the appropriate leadership styles among school principles and its effects on teachers job satisfaction and motivation. In order to answer the research questions, the study adopted quantitative research methodology. Two questionnaires were used in order to gather the data on the leadership styles of school principals and teachers job satisfaction. The two questionnaires used were "Leadership Practice Inventory" developed by James M. Kouzes and Barry Z. Posner in the early 1980s, and "Factors Affecting Job Satisfaction, and Teacher Retention for Teachers" developed by Karen S. Myers Giacometti in November 8, 2005. The participants of this study were 200 teachers in 10 schools located in the Metn area. The findings significantly showed that teachers preferred working with a leader that motivated, encouraged, and was always there for them. Thus, the teachers preferred a leader with a mixture of transformational and transactional leadership style rather than the laissez faire one. Teachers perceived leaders with positive practices to have better effects on teachers motivation level and job satisfaction. As for the different demographic variables, statistics showed that each of the university degree, gender, and salary played a separate role depending on the given conditions. This study concluded with several recommendations given to school principals in order to improve the educational system, and their relationship with their teachers and staff members. Specifically, these recommendations contributed to the improvement and understanding of leadership styles in the Lebanese educational context.