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Ackerman, Matthew; Egalite, Anna J. – Educational Assessment, Evaluation and Accountability, 2017
There is no consensus among researchers on charter school effectiveness in the USA, in part because of discrepancies in the research methods employed across various studies. Causal impact estimates from experimental studies demonstrate large positive impacts, but concerns about the generalizability of these results have prompted the development of…
Descriptors: Charter Schools, School Effectiveness, Research Methodology, Educational Research
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