Transformational leadership has been characterized by vision and inspiration while the emphasis of instructional /pedagogical leadership is on framing clear goals and objectives and then achieve them through careful planning and monitoring. Headteachers play the leading role in school improvement and increase and maintain instructional effectiveness. Their prime focus is on learning outcomes and enhancing the quality of the teaching-learning process. A qualitative research design was applied to get headteachers' perspectives about role of instructional leadership in successful execution of the curriculum. Purposively 14 headteachers were selected to conduct interview. Among them 7 were female headteachers and 7 were male headteachers. The interview protocol was developed after reviewing literature and discussing role of instructional leaders in successful execution of curriculum with experts in the area and renowned educationists. It was revealed that school heads as instructional leaders have an important role in successful execution of curriculum

The study examined the effect of instructional leadership on school performance. Instructional leadership is a process that how quality practices: building and sustaining the school vision, monitoring of curriculum and instruction, leading a learning community, data gathering and assessing, and shared leadership were implemented by head teachers effectively. School performance is defined as the attainment of targets by teachers, students and schools. In district Sahiwal, head teachers were evaluated for instructional leadership by their SSTs (N=1026) on HTEQ. For school performance, a score of student achievement were obtained from their schools, while data on factors: cleanliness of schools, student presence, the functionality of facilities, and teacher presence were obtained through monthly visit reports of MEAs. The study revealed that head teachers were used practices of instructional leadership effectively and excellent level of schools' performance were found. The study explored a moderate relationship between variables (r=.54), and a 39 % variance in school performance could be explained through instructional leadership. The recommendations were also added in the study.