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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
Gardner, Eric – 1989
Five of the common misuses of tests are reviewed: (1) acceptance of the test title as an accurate and complete description of the variable being measured (failure to examine the manual and the items carefully to know the specific aspects to be tested can result in misuse through selection of an inappropriate test for a particular purpose or…
Descriptors: Error of Measurement, Evaluation Problems, Examiners, Scoring