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Spybrook, Jessaca; Puente, Anne Cullen; Lininger, Monica – Journal of Research on Educational Effectiveness, 2013
This article examines changes in the research design, sample size, and precision between the planning phase and implementation phase of group randomized trials (GRTs) funded by the Institute of Education Sciences. Thirty-eight GRTs funded between 2002 and 2006 were examined. Three studies revealed changes in the experimental design. Ten studies…
Descriptors: Educational Research, Research Design, Sample Size, Accuracy
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Wolf, Patrick; Gutmann, Babette; Puma, Michael; Kisida, Brian; Rizzo, Lou; Eissa, Nada; Carr, Matthew – National Center for Education Evaluation and Regional Assistance, 2010
The District of Columbia School Choice Incentive Act of 2003, passed by Congress in January 2004, established the first federally funded, private school voucher program in the United States. Since that time, more than 8,400 students have applied for what is now called the DC Opportunity Scholarship Program (OSP), and a rigorous evaluation of the…
Descriptors: Private Schools, Graduation Rate, School Choice, Educational Environment
Maynard, Rebecca; Dong, Nianbo – Society for Research on Educational Effectiveness, 2009
This study empirically investigates the effectiveness of Distributed Leadership Teacher Training (DLT) program on improving student's academic achievement. In addition, it both tests the assumption that the year 1 impacts are stable across calendar years and examines the importance of properly accounting for the fact that the standard error of the…
Descriptors: Urban Schools, Middle School Students, Elementary School Students, Sample Size
Agodini, Roberto; Dynarski, Mark; Honey, Margaret; Levin, Douglas – Mathematica Policy Research, Inc., 2003
The No Child Left Behind Act (P.L. 107-110) called for the U.S. Department of Education to carry out a national study of the effectiveness of educational technology. With computers becoming ubiquitous in American schools, and purchases of hardware and software now substantial expenses for school districts, whether funding is supporting effective…
Descriptors: Teaching Methods, Program Effectiveness, Federal Legislation, Research Methodology