Accurate, reliable, and scalable measurement of classroom quality represent a critical tool for ensuring that young children benefit from early learning programs. The Early Childhood Classroom Observation (ECCO) study was designed to better understand how video recordings can support high-quality measurement of pre-kindergarten (pre-K) classrooms,…

Teachers' social and emotional learning (SEL) beliefs can impact SEL implementation efforts and consistency in primary and secondary schools. The diffusion of innovations theory is a suitable framework for understanding problems with SEL implementation and diffusion within educational organizations and among teachers over time. The purpose of this…

This brief comes out of a 4-year partnership between Policy Analysis for California Education (PACE) and California Education Partners (Ed Partners) aimed at improving school district outcomes. Ed Partners' efforts focus on two key areas: prekindergarten and transitional kindergarten through third grade coherence and increasing the number of…

Issues of social injustice are pervasive in school systems around the world (Welton et al., 2019) with ingrained institutional barriers that hinder students from reaching future successes. As a result, the purpose of this study was to understand the focuses, mindsets, and actions of leaders for social justice working to redress issues of inequity…

Purpose: Having a clear understanding of the types and amounts of classroom literacy learning opportunities is important for contextualizing children's early literacy performance. In this study, we examine the content, context, and management of literacy learning opportunities in a large, geographically diverse sample in the United States. We also…

Research shows children with poor oral health are nearly three times more likely to miss school than their healthier peers which can lead to lower academic performance and ability to succeed in school. Furthermore, poor oral health remains one of the top reasons why California students miss school, resulting in a loss of $28 million per year to…

To improve access to high-quality early childhood education, California has made historic investments in Universal Prekindergarten (UPK), including the California State Preschool Program (CSPP). The state's UPK initiative elevates the importance of multilingualism and the early identification of disabilities in children. This report offers…

California's investment in Universal Transitional Kindergarten (UTK) reflects a commitment to providing access to UTK for all 4-year-olds in public schools by the 2025-2026 academic year. However, the implementation of transitional kindergarten (TK) presents challenges for districts in aligning this new grade coherently with existing grade levels…

Given the recent attention on early childhood mathematics education, it is important to understand how early childhood educators conceptualize the work of mathematics teaching and learning. This article describes a study of preschool educators' conceptions of mathematics teaching and learning in the context of a multi-year professional development…

In 2021, California committed to making transitional kindergarten (TK)--a school-based preschool program initially designed for older 4-year-olds--available for all 4-year-olds by 2025-26. As TK becomes universal, California will need to greatly expand the early learning workforce. This brief provides estimates of how many TK teachers California…

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…

This study examined the impact of an in-school dance curriculum on the social-emotional development of at-risk preschoolers in a southern California public preschool program. The preschoolers (N = 69) participated in dance for thirty minutes, once a week, over an entire academic year. We compared the Desired Results Developmental Profile (DRDP)…

Objective: To gain insight into the extent of body mass index (BMI) change during an academic year for children with overweight or obesity at entry to an early learning programme with nutrition and physical activity components ("Head Start"). We explored whether meeting with families to discuss weight and nutrition and age of entry in…

California recently committed to making prekindergarten (PreK) universal through the expansion of transitional kindergarten (TK) and other state-funded programs. Between 2021-22 and 2023-24, TK enrollment doubled, from about 75,000 to over 151,000 children. Approximately 59% of eligible 4-year-olds enrolled in TK in 2023-24. Across publicly funded…

Early childhood researchers from across the U.S. came together to form the Early Learning Network (ELN) in 2016 with the mission to identify policies and practices that narrow opportunity gaps and help children maintain early learning success. Early Learning Network teams are excited to share what they have learned--and what it means for early…