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Jacob, Andy; Vidyarthi, Elizabeth; Carroll, Kathleen – TNTP, 2012
"Irreplaceables" are teachers who are so successful they are nearly impossible to replace, but who too often vanish from schools as the result of neglect and inattention. To identify and better understand the experience of these teachers, the authors started by studying 90,000 teachers across four large, geographically diverse urban school…
Descriptors: Urban Schools, Teaching (Occupation), Teacher Effectiveness, Teacher Persistence