This report summarizes the complex research literature on quantitative methods for assessing how impacts of educational interventions on instructional practices and student learning differ across students, educators, and schools. It also provides technical guidance about the use and interpretation of these methods. The research topics addressed…

This study examined the efficacy of two educational practices designed to prevent learning difficulties in children from high risk families (N=64) during the first 8 years of life. The preventive treatments included: (1) educational daycare plus family education from birth to age 5 followed by a home/school resource program from kindergarten…