Act 82 of 2012 established new standards for Pennsylvania's teacher evaluation system, including the incorporation of student performance measures in ratings decisions. Since 2009, approximately 35 states have amended teacher evaluation systems, with student achievement playing an increasingly prominent role. This count includes neighboring…

Two decades of research have documented what now is common knowledge: no in-school factor matters more to students' educational experiences and outcomes than the effectiveness of their teacher. As a result, the national airspace is increasingly crowded with proposed reforms and initiatives designed to boost teacher performance, including new…