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Klerman, Jacob Alex; Olsho, Lauren E. W.; Bartlett, Susan – American Journal of Evaluation, 2015
While regression discontinuity has usually been applied retrospectively to secondary data, it is even more attractive when applied prospectively. In a prospective design, data collection can be focused on cases near the discontinuity, thereby improving internal validity and substantially increasing precision. Furthermore, such prospective…
Descriptors: Regression (Statistics), Evaluation Methods, Evaluation Problems, Probability
Ackerman, Matthew; Egalite, Anna J. – Program on Education Policy and Governance, 2015
When lotteries are infeasible, researchers must rely on observational methods to estimate charter effectiveness at raising student test scores. Considerable attention has been paid to observational studies by the Stanford Center for Research on Education Outcomes (CREDO), which have analyzed charter performance in 27 states. However, the…
Descriptors: Charter Schools, Observation, Special Education, Lunch Programs