The purpose of this study is extend previous methods by Raudenbush and Liu (2001) and Spybrook et al. (2011), and provide methods for power analysis of tests of treatment effects in studies of polynomial change with two levels of nesting (e.g., students and schools) where the treatment is either at the third level (e.g., school intervention) or at…

Relatively few rigorous studies of the effectiveness of contemporary public prekindergarten programs have been conducted despite the growing number of programs and large monetary investments that accompany them. The study on which this presentation is based was launched in partnership with the Tennessee State Department of Education's Division of…

This paper presents evidence on the amount of classroom variation in gains across various domains of achievement within the Tennessee Voluntary Pre-Kindergarten (TN-VPK) program; the data are taken from the randomized control trial (RCT) design of the TN-VPK evaluation. This study explores areas where those differences are largest, and offers…

Interest in scaling up prekindergarten programs for children from low income families is dramatically increasing, especially with the announcement by President Obama of support for "universal preschool." Research in early education supports the idea of developmentally appropriate practice as reflected in instructional groupings and…

The nested data structure inherent in education (i.e. students nested in schools nested in districts) makes intact school matching an appealing approach in observational studies of educational interventions and policies for both theoretical and practical purposes. This paper provides guidance to applied education researchers who are employing…

Writing is an essential skill for participating in modern American society. Although it is crucial to careers and civic engagement, student writing falls far short of national expectations (College Board, 2004; NCES, 2012; Persky, Daane, & Jin, 2003). The Common Core State Standards (CCSS) seek to increase the rigor of writing instruction…

The gap among ethnicities and gender in mathematics achievement is a well-known problem. While the gap has been shrinking over the past three decades, it has not completely diminished (Jencks & Phillips, 1998; McGraw, Lubienski, & Strutchens, 2006). The ALEKS, Assessment and LEarning in Knowledge Spaces, tutoring system is one promising…