Assessment procedures for school principals need to be valid, reliable, and utilitarian. They should emphasize the humane elements of the school setting, and they should reflect a concern for a safe school environment. Breaking these requirements into component parts allows the development of five-point Likert scales teachers may use to assess principals. A school that emphasizes a problem-solving philosophy, also called "experimentalism," will stress the importance of principal proficiency in selected areas. Taking a behavioral approach also leads to the determination of precise objectives for a principal to attain, and these may be expressed as a percentage of change in a particular student behavior. The school principal may also be assessed by using criteria from a constructivist educational philosophy. With regard to assessment as well as other aspects of the educational setting, the principal needs to be open to change that includes technological advancement. The principal's role in building-level school reform is crucial for successful reorganization and curriculum development. (SLD)