Stages of Teaching  Creating a Comprehensive System for Evaluating and Supporting Effective Teaching By Linda Darling-Hammond, 2012 Criteria and methods for evaluating teachers vary substantially across districts and at key career milestones. A comprehensive system of teacher evaluation should provide support for supervision and professional learning, identify teachers who need additional assistance or a career change, and recognize expert teachers who can contribute to the learning of their peers. This report from the Stanford Center for Opportunity Policy in Education outlines an integrated approach and a professional development system that supports effectiveness for teachers at every stage of their careers. Principal Preparation  The Making of the Principal: Five Lessons in Leadership Training The Wallace Foundation, June 2012 Too often, training for principals fails to prepare them