By creating and analyzing matched samples, researchers can simplify their analyses to include fewer covariate variables, relying less on model assumptions, and thus generating results that may be easier to report and interpret. When two groups essentially "look" the same, it is easier to explore their differences and make comparisons…

The College Board developed a program in the content areas of English and mathematics designed to prepare students for challenging content as early as grade 6 and extending through high school. Conceived with the goal of creating high-quality professional development activities with associated instructional strategies embedded in instructional…