Purpose: Key considerations in designing multilevel experimental studies are to efficiently use resources and to determine the sample size allocation such that designs have adequate statistical power. The utility of optimal sampling and power analysis results depends on accurate information about design parameters, such as intraclass correlations…

While education is often talked about as a standalone system, most people experience education as just one part of their broader lives. Schools do not exist in siloes, but serve as a place where people and policy overlap and intersect. The implication of this is that while what happens inside of school buildings is incredibly important, such as…

This study explores the impacts of selected early science experiences in kindergarten (frequency and duration of teachers' teaching of science, availability of sand/water table and science areas, and children's participation in cooking and science equipment activities) on children's science achievement in kindergarten and third grade using data…

In light of the strong correlation between Kindergarten performance and later cognitive and achievement outcomes, this paper investigates the link between student achievement and the educational background characteristics of Kindergarten teachers. This study will utilize the Early Childhood Longitudinal Study Kindergarten Cohort (ECLS-K), a…

This study examines the impact of various types of preschool care and education on the reading achievement of children, kindergarten through fifth grade, who participated in the Early Childhood Longitudinal Study-Kindergarten Class of 1998-99 (ECLS-K). The participants in this study are located throughout the United States of America. These…