Akinjide Isaac YUSUF2024-05-202024-05-202022-12Kate TurabianPhDhttps://repository.lcu.edu.ng/handle/123456789/146This study investigated Principals' communication flow and decision-making style as predictors of teachers' job commitment in public secondary schools in Oyo state as literature show paucity of studies on the subject. Dearth of study on joint influence of principals’ communication flow and decision-making style on teachers’ job commitment was the gap filled. The studies were guided by theory X and Y, side bet and two step flow theories. Three research questions and two hypotheses were formulated. Descriptive survey research was adopted. Study population comprised of all principals (625) and teachers (14,508). Sample size consisted of 276 principals and 3,576 teachers. Two self-constructed questionnaires - Principals' Communication Flow and Decision-Making Questionnaire (PCFDMQ) (r = .850) and Teachers’ Job Commitment Questionnaire (TJCQ) (r = .812) were used. Data collected were analysed using descriptive and inferential statistics. Results showed that principals upward (x̅ = 2.717) and downward (x̅ = 2.902) communication flow is satisfactory; principals' decision-making participation (x̅ = 2.235), consultation (x̅ = 2.455) and spontaneous decision-making (x̅ = 2.225) is fair. They also do not avoid decision-making (x̅ = 1.290). Results showed teachers' job commitment to the students (x̅ = 3.131), school (x̅ = 3.212) and profession (x̅ = 3.224) to be low. Results showed significant joint contribution of principal communication flow and decision-making style on teachers’ job commitment (F6, 269 = 2.316, P<0.05). However, principals' upward (Beta = -.172; t = -2.594), downward communication flow (Beta = -.191; t = -3.199) with decision-making participation (Beta = -.186; t = -2.718) had significant negative prediction on teachers' job commitment. It was therefore recommended amongst others that principals should enhance the communication flow and decision-making styles in the schools for improved teachers' job commitment. Keywords: Principals' Communication Flow, Decision-making Style, Teachers' Job Commitment Word Count: 279enThesis