Programs that improve teaching effectiveness represent a core strategy to improve student educational outcomes and close student achievement gaps. This article compiles empirical values of intraclass correlations for designing effective and efficient experimental studies evaluating the effects of these programs. The Early Childhood Longitudinal…

Background: Social experiments frequently exploit data from administrative records. However, most administrative data systems are designed to track earnings or benefit payments among residents within a single state. When an experimental participant moves across state lines, his entries in the data system of his state of origin consist entirely of…

This paper examines the major methodological advantages of random assignment for the purpose of estimating the effectiveness of current manpower policy. It also reviews the claimed methodological and ethical objections to experiments. The authors argue that the offsetting gain from experimentation is the inherent reliability of experimental…

Although random assignment is generally the preferred methodology in impact evaluations, it raises numerous ethical concerns, some of which are addressed by securing participants' informed consent. However, there has been little investigation of how consent is obtained in social experiments and the amount of information that can be conveyed--and…

Along with the rapid expansion over the past decade of Head Start, a program providing comprehensive early childhood development services to low-income children, their families, and their communities, has come the demand for rigorous research to demonstrate program effectiveness. This report describes the proposed design of a national study of the…

Data from experimental evaluations of four state welfare-to-work programs were combined with information on the selection process in order to determine the efficacy of social programs in light of performance standards. Data suggest that either the federal requirements cannot be met or that standards can only be met under special circumstances.…

The "CSE Program Evaluation Kit" is a series of nine books intended to assist people conducting program evaluations. This volume, the third in the kit, discusses the logic underlying the use of quantitative research designs, including the pretest-posttest design, and supplies step-by-step procedures for setting up and interpreting the…

As the principle of integration instead of segregation has become dominant in the planning and organization of the Norwegian school (1st to 9th grade), different kinds of individualized instruction have been recommended to the teachers to use. This study investigates whether, and to what extent, an experimental program of individualized…

Data analysis approaches for program evaluation under the conditions of natural experiments are explored, using evaluation of the DARE program of drug use prevention among elementary school students as an example. The suggested methodology uses multiple independent analyses to demonstrate the convergence or divergence of program outcomes. (SLD)