First, their analyses of a leader's role in defining the school mission focuses on two functions: framing clear school goals and communicating clear school goals. Second, in the area of managing the instructional program, principals have three functions: supervising and evaluating instruction, coordinating curriculum, and monitoring student progress. Third, in regards topromoting a positive school-learning climate principals have five functions: protecting instructional time, promoting professional development, maintaining high visibility, providing incentives for teachers, and providing incentives for learning.