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Brigham Young University
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NBER Working Papers and Publications
|June 2008||The Persistence of Teacher-Induced Learning Gains|
with Brian A. Jacob, Lars Lefgren: w14065
Educational interventions are often narrowly targeted and temporary, and evaluations often focus on the short-run impacts of the intervention. Insofar as the positive effects of educational interventions fadeout over time, however, such assessments may be misleading. In this paper, we develop a simple statistical framework to empirically assess the persistence of treatment effects in education. To begin, we present a simple model of student learning that incorporates permanent as well as transitory learning gains. Using this model, we demonstrate how the parameter of interest - the persistence of a particular measurable education input - can be recovered via instrumental variables as a particular local average treatment effect. We initially motivate this strategy in the context of tea...
Published: Jacob, Brian, Lefgren, Lars and David Sims. (2010). "The Persistence of Teacher-Induced Learning Gains." Journal of Human Resources 45(4): 915-943.