Hallinger and murphy (1985) advanced a model of instructional leadership employing three dimention.Defining the school mission spotlight the principal's role in working with other to ensure that the school use clear.measureble,time-base goals for the academic progress of students.principal's must communicate the goals so that they are widely know,supported througout the school community, and incorperated into daily practice.managing the instructional program means coordinating and controling the school's curriculum and instruction by stimulating,supervising,and monitoring teaching and learning. Finally promoting a positive school learning climate builds on the idea that affective schools create an academic press through high standards and acpectations for student and teachers (Hallinger,2005). To measure the dimentions of the conceptual model, Hallinger (1983) developed the Principal Instractional Management Rating scale or PIMRS. The questionnaire asks the respondents to indicate the frequency with which the principal engages in behaviors associated with the three dimensions of instructional leadership. A similar questionare with three dimensions, the Instructional leadership inventory,was developed by jane M.Alig-Mielcarek and Hoy(2004).