Teacher "MoneyBall": Can Big Data Weed Out the Winners?

Everyone from the federal government to students agree that high quality teachers are a top priority of school reform. No one seems to agree however on how to define exactly what makes a teacher successful. Enter Big Data. Now school districts across the country are hiring consulting firms that use data-driven screening tools to identify the superstars among the teacher rank and file, and some education advocates are calling foul. Stephanie Simon is the senior education reporter for Politico.