Federal initiatives and other research have led states across the nation to sharpen their focus on teacher evaluation in recent years. In 2009 a seminal report, "The Widget Effect," from The New Teacher Project revealed that in districts using a binary rating system to evaluate teachers, less than 1 percent of teachers received an…

Policymakers have long pursued more cost effective, scalable alternatives for delivering elementary and secondary education. The elusive goal is identifying how to reform educational systems so that children will consistently achieve more academically--at a lesser cost. A frequently heard reform claim of this sort is that charter schools deliver…