In the United States, the long-term effects of early childhood programs have been given particular weight in research on early childhood education and in policy debates about the value of prekindergarten. Many research teams were building the evidence base on U.S. early childhood programs to inform that discussion when studies were upended by the…

High-quality pre-K sets children on a path for success in kindergarten and beyond. Yet most children in the United States do not attend high-quality programs, with particularly pronounced gaps in quality for children from families with low incomes, dual language learners, Black children, and Latino children. Ensuring equitable access to…

While there is a consensus that attending preschool better prepares children for kindergarten, evidence on the factors that sustain the preschool boost into the early elementary years is still emerging. To add to this literature, we use lottery data from applicants to oversubscribed schools in Boston Public Schools (BPS) prekindergarten program to…

General measures of process quality are widely used in the early childhood education (ECE) field. However, the evidence regarding associations between the most widely used process quality measure, the Classroom Assessment Scoring System (CLASS; Pianta et al., 2008), and children's school readiness gains during the preschool year is mixed. Using…

There are unique challenges to estimating causal effects of preschool for students with special needs that have not received attention in the literature. We revisit the Head Start Impact Study (HSIS) to illustrate that when and how special needs is defined has implications for the internal validity of and interpretation of special needs subgroup…

In this paper we use data from students who participated in the oversubscribed Boston Public Schools (BPS) prekindergarten program as a window into variation in the program's medium-term effects. We first examine whether, for the sample of students who applied to oversubscribed BPS prekindergarten programs, there is variation in the effects of the…

Preschool improves children's kindergarten readiness, but the cognitive outcomes of preschool enrollees and nonenrollees tend to converge partially or fully in elementary school. In older programs, most of this convergence occurs in kindergarten (Li et al., 2016), but evidence from today's programs is sparse. Using data on 4,971 children who…

Preschool improves children's kindergarten readiness, but the cognitive outcomes of preschool enrollees and nonenrollees tend to converge partially or fully in elementary school. In older programs, most of this convergence occurs in kindergarten (Li et al., 2016), but evidence from today's programs is sparse. Using data on 4,971 children who…

Theory and empirical work suggest inclusion preschool improves the school readiness of young children with special needs, but only 2 studies of the model have used rigorous designs that could identify causality. The present study examined the impacts of the Boston Public prekindergarten program-which combined proven language, literacy, and…

Though there is an expanding field of research on public prekindergarten, there is a relatively little comprehensive investigation into what public prekindergarten costs. We address some of the absences in the literature by analyzing public-sector expenditures for the city of Boston's public prekindergarten program, a particularly high-quality…

Though there is an expanding field of research on public prekindergarten, there is a relatively little comprehensive investigation into what public prekindergarten costs. We address some of the absences in the literature by analyzing public-sector expenditures for the city of Boston's public prekindergarten program, a particularly high-quality…

Early care and education in the United States is in crisis. The period between birth and kindergarten is a crucial time for a child's development. Yet vast racial, ethnic, and socioeconomic disparities that begin early in children's lives contribute to starkly different long-term outcomes for adults. Compared to other advanced economies, child…

Although text messaging interventions targeting parents of older students have shown promise for improving a variety of outcomes, evidence on text-based outreach and support for parents of young children is just emerging. We explore programmatic data from a text-based mentoring intervention designed to support postpartum mothers and promote…

Research-practice partnerships often face a fundamental tension: well-designed, high-quality research takes time, but practitioners and policy makers need answers to pressing questions as soon as possible. In this article, Jason Sachs, Meghan McCormick, JoAnn Hsueh, and Catherine Snow discuss this mismatch between the tight timelines of…

Universal public prekindergarten programs have been expanding in recent years, but not all eligible families apply to these programs, for reasons that are not well understood. Using two cohorts of students (N = 8,391) enrolled in Boston Public Schools, we use geographic information systems to combine administrative records with census data to…