Estudillo HM, Mhunpiew N. The Development of a Strategic Leadership Model for Teacher Instructional Competencies at the Private Higher Education Institutions in Mindanao, Philippines. scho [Internet]. 2021May28 [cited 2024May5];13(1):121-37. Available from: http://www.assumptionjournal.au.edu/index.php/Scholar/article/view/5453