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The Mirage: Confronting the Hard Truth About Our Quest for Teacher Development


"The Mirage examines how three large public school districts and one charter school network support teachers' professional growth-and how their support affects teachers' performance. It is based on surveys of 10,000 teachers and 550 school leaders, and interviews with 100 district office staff members. We wanted to identify what distinguishes teachers who improve from those who don't, in the hope of creating a blueprint for helping far more teachers succeed in the classroom. Instead, what we found challenged all our assumptions about teacher development and how to achieve it at scale."

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