The purpose of this study was to explore the perceptions and experiences of the school management team for using strategic planning for school improvement in a private secondary school in Karachi, Pakistan. It was a qualitative case study and different tools were used for data collection, such as semi-structured interviews and document analysis. The findings show that the strategic planning was introduced in school in 1995 in the form of models which were long-term plans. The principal, section heads, pool heads and Head of School Improvement Centre are directly involved in strategic planning and implementation process, but class teachers, students and parents are indirectly involved in the planning process. The school has its own mechanism of monitoring and evaluation of plans to achieve the set goals and targets within the specific timeline. The findings also reveal that the practices and use of strategic planning in school was helpful in improving teacher's professional practices and enhancing students' learning outcomes.