Purpose: The purpose of this project was (1) to collaborate with public preschool programs to adapt, test, and revise the implementation model of an innovative early mathematics intervention, "Pre-K Mathematics" and (2) to determine whether this model makes it possible for local programs to sustain their implementation without reducing…

The Washington State Department of Children, Youth, and Families (DCYF) administers and operates a state-funded preschool program called the Early Childhood Education and Assistance Program (ECEAP). To inform systemwide improvements in the program, the department contracted with Education Northwest to conduct a qualitative study of nine sites…

Despite calls to better prepare children for school entry, children with social, emotional, or behavioural needs continue to experience limited access to care that meets their needs. Despite frameworks for Positive Behaviour Intervention and Support (PBIS) that may aid in addressing children's needs, bringing those frameworks to scale in early…

Cities and school districts across the Commonwealth and country are seeking to combine the benefits of both community- and school-based early childhood programs through a "mixed-delivery model." In a mixed-delivery model, school districts shoulder the administrative burden of federal and state grants, subcontract a number of their seats…

Policymakers face dilemmas when choosing a policy, program, or practice to implement. Researchers in education, public health, and other fields have proposed a sequential approach to identifying interventions worthy of broader adoption, involving pilot, efficacy, effectiveness, and scale-up studies. In this paper, we examine a scale-up of an early…

A central tenet of constructivist models of conceptual development is that children's initial conceptual level constrains how they make sense of new evidence and thus whether exposure to evidence will prompt conceptual change. Yet little experimental evidence directly examines this claim for the case of sustained, fundamental conceptual…

The Arizona English-Language Learner Assessment (AZELLA) is the backbone of Arizona's new English-language learner (ELL) policy in that it is used to assess students' English-language proficiency in order to place them into groups for English-language instruction and to determine when they have become proficient in English. This paper evaluates a…