Background: Early-grade reading proficiency is well documented as in important factor for later academic success. Researchers and educators consider the achievement of reading proficiency by the end of grade three to be crucial to future academic success and financial independence (Hein et al., 2013; La Paro & Pianta, 2000; Singh, 2013). As…

Educators and researchers have been fighting the reading wars for the last century, with battles see-sawing literacy instruction in American schools from phonics to whole language and, most recently, back to phonics again. Over the last decade, 32 states and the District of Columbia have adopted new "science of reading" laws that require…

Children should develop literacy skills that progress from learning to read to reading to learn as they move from kindergarten through early elementary. These skills support reading proficiency and build knowledge in all subject areas. Students who struggle with literacy skills as early as kindergarten often continue to read below grade level…

This paper is the first to examine the longitudinal results of six years of implementation of Literacy Squared, a biliteracy model for Spanish/English speaking emerging bilingual students. This model includes paired literacy instruction with grade-specific time allocations for Spanish literacy and literacy-based ELD. Furthermore, cross-language…

There is little empirical research regarding the impact the four-day per week school schedule has on primary grade student achievement. Early literacy and numeracy skills are essential functions that provide the basis for success in the American public education system and a global economy. Any school schedule that adversely affects mastery of…

We examined the predictive value of early spelling for later reading performance by analyzing data from 970 U.S. children whose spelling was assessed in the summer following the completion of kindergarten (M age = 6 years; 3 months). The word reading performance of most of the children was then tested after the completion of Grade 1 (age 7;5),…

This Policy Guide draws on work with five states to provide context and guidance for policymakers looking to strengthen the pre-K to K-3 continuum and create opportunities to close the achievement gap. It includes a tear-out page of guiding questions at the end.

The purpose of this paper is to showcase new research that seeks to provide guidance on the heterogeneity of treatment effects by utilizing the variance of demographic differences in state assessments. This study is focused on a simple randomized block design where students are nested within schools, and within each school students are randomized…

Randomized experiments are often considered the strongest designs to study the impact of educational interventions. Perhaps the most prevalent class of designs used in large scale education experiments is the cluster randomized design in which entire schools are assigned to treatments. In cluster randomized trials (CRTs) that assign schools to…

Background: Cluster-randomized experiments that assign intact groups such as schools or school districts to treatment conditions are increasingly common in educational research. Such experiments are inherently multilevel designs whose sensitivity (statistical power and precision of estimates) depends on the variance decomposition across levels.…

The study uses a quasi-experimental comparison group design to test the effectiveness of "Treasures" by comparing outcomes for students who used "Treasures" to those who did not use "Treasures", adjusting for differences between the "Treasures" and comparison groups on baseline characteristics. The study…