This comprehensive systematic literature review ("SLR") seeks to give innovative information to future researchers about future agendas, research gaps, and the research needs of strategic leadership practises and their role in achieving competitive advantage in schools. Specifically, this comprehensive SLR aims to clarify an SLR that gives future researchers information about future agendas, research gaps, and the research needs of strategic leadership practises. The PRISMA guidelines served as the basis for this research project's framework. The findings suggested that what distinguishes our most recent comprehensive review of the relevant literature is not only the proliferation of strategic leadership practises but also the role that these practises play in giving schools in Europe, the United States of America, the United Kingdom, and Australia an advantage over other educational institutions in their respective regions. Countries in Asia, Africa, and the Middle East should pay more attention to strategic leadership practises and the role that these practises play in acquiring a competitive advantage in the research field of educational institutions. Below, you will find a list of proposals for innovative information that should be offered to future researchers about future agendas, research gaps, and the research needs of strategic leadership practises and their significance in achieving a competitive advantage in schools' research. such as utilising samples that are more extensive and applying quantitative research procedures such as longitudinal, experimental, and time-series design approaches.