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Class-Size Caps, Sorting, and the Regression-Discontinuity Design[J] . Miguel Urquiola,Eric Verhoogen.The American Economic Review . 2009 (1)
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Retrospective vs. prospective analyses of school inputs: the case of flip charts in Kenya[J] . Paul Glewwe,Michael Kremer,Sylvie Moulin,Eric Zitzewitz.Journal of Development Economics . 2004 (1)
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The Impact of Teacher Training on Student Achievement: Quasi-Experimental Evidence from School Reform Efforts in Chicago[J] . The Journal of Human Resources . 2004 (1)