The study uncovered the relationship between management style of school heads and instructional competence of teachers in public secondary schools of Panabo City Division. Also, it investigated the association of the involved variables and the domains of management styles of school heads that significantly influence the instructional competence of teachers. With the use of probability sampling, 150 secondary teachers in the public schools were selected as the respondents. Utilizing the descriptive-correlational survey method, the data collated were analyzed through the use of Weighted Mean, Product-Moment correlation and Regression Analysis. Results revealed that there was extensive management styles of school heads and a very extensive instructional competence of teachers. Furthermore, there was a significant relationship between the management style of school heads and instructional competence of teachers. Moreover, all domains of management styles of school heads were found to have significantly influenced the instructional competence of teachers. Based on the findings, it was further suggested that higher officials in the Department of Education may help the school heads in empowering themselves of their management styles to ensure an excellent instructional competence among teachers.