Teachers play a critical role in deciding what curricula are used in their classrooms. We examine the factors that teachers describe influencing their sustainment or discontinuation of a literacy curriculum, "Zoology One," following their participation in a randomized controlled trial (RCT) examining the curriculum's efficacy. This study…

We describe here lessons learned in designing an early algebra curriculum to measure early algebra's impact on children's algebra readiness for middle grades. The curriculum was developed to supplement regular mathematics instruction in Grades K-5. Lessons learned centered around the importance of several key factors, including using conceptual…

Almost every state in the United States has revamped its principal evaluation policies since 2009, yet we know little about how they are implemented. Based on interviews and document analysis in 21 small- and medium-sized school districts, we found that superintendents' sensemaking shaped their implementation of policy. Drawing on their beliefs…

This study summarizes state-level policies surrounding school readiness assessment. A search was conducted to collect and code school readiness policies to document key components of assessment practices in each state, such as if the assessments were mandated or recommended, timing of assessment, measures used, domains of functioning assessed, and…

In the present study we examined the contributions of transcription and foundational oral language skills to written composition outcomes in a sample of kindergartners. Two hundred and eighty-two kindergarten students from 49 classrooms participated in this study. Children's writing-related skills were examined using various tasks. Latent…

In recent years, several states have expanded a new publicly funded learning option: Transitional Kindergarten (TK). TK bridges prekindergarten and kindergarten in its eligibility, requirements, and design. Using Michigan as a case study, we examine TK's fit in the early learning landscape. Broadly, we find TK in Michigan reduces some…

Assessing implementation allows for a better understanding of an intervention's effects and the mechanisms that influence its impact. Two main areas of implementation are (a) the quality with which an intervention is delivered and (b) instructors' adherence to the programmed intervention. The current study used data from a kindergarten mathematics…

Investigators often rely on the proportion of correct responses in an assessment when describing the impact of early mathematics interventions on child outcomes. Here, we propose a shift in focus to the relative sophistication of problem-solving strategies and offer methodological guidance to researchers interested in working with strategies. We…

Despite increasing pressure for children to learn to write at younger ages, there are many unanswered questions about composition skills in early elementary school. The goal of this research was to examine the dimensionality of composition skills in kindergarten children, thereby adding to current knowledge about the measurement of young…

The purpose of this study was to conduct a replication study of a kindergarten mathematics intervention, ROOTS, delivered within the context of a research base core program. In the study, sixty two classrooms were randomly assigned to treatment (ROOTS) or a business as usual control. All classrooms implemented a research based core program (Early…

Young students at risk for reading difficulties are likely to have long-term reading difficulties if they are not provided with evidence-based, supplemental instruction. This pilot study evaluated the feasibility of a Tier 2 reading intervention ("Reading RULES! Kindergarten"; RRK) and its promise to improve outcomes for kindergarten…

This report summarizes the results of kindergarten through fifth grade students' academic achievement outcomes in mathematics and science following four years of campus-level participation in the Launching Elementary Academic Foundations (LEAF) to STEM program. The LEAF to STEM Program consists of three key components that were adapted for K-5…

In basic regression discontinuity (RD) designs, causal inference is limited to the local area near a single cutoff. To strengthen the generality of the RD treatment estimate, a design with multiple cutoffs along the assignment variable continuum can be applied. The availability of multiple cutoffs allows estimation of a pooled average treatment…

Developmental science demonstrates that younger children (ages 4 to 8) are capable of making meaning of their contexts and the self. Yet, younger children's meaning making is largely absent from intervention and implementation research on early childhood policies. This absence is notable given the rise in investment in early childhood policies and…

The goal of the present study was to compare children's word learning through print text, video, and electronic text in the context of a cross-age peer-learning program implemented in linguistically diverse kindergarten and fourth grade classrooms that included English Learners (ELs) and their non-EL peers. Children were assessed at pre- and…