This study is a randomized control trial of full- versus half-day prekindergarten (pre-K) in a school district near Denver, Colorado. Four-year-old children were randomly assigned an offer of half-day (4 days/week) or full-day (5 days/week) pre-K that increased class time by 600 hours. The full-day pre-K offer produced substantial, positive…

Classification changes are common in special education. Using the first four years of the Pre-elementary Education Longitudinal Study data set (N = 3000), we investigated national trends in classification changes among young children with disabilities, the relationship between classification changes and children's demographic information, and the…

Purpose: Derivational morphology and compounds are important aspects of academic vocabulary. However, investigation of the development of expressive derivational and compound morphology using language sampling is sparse. This cross-sectional study used three types of language samples to investigate quantitative and qualitative changes in the…

Research Findings: This study examines efforts by Head Start programs to coordinate with elementary schools and seeks to better understand how coordination practices may support children's transition to and success in kindergarten. Data were drawn from a nationally representative sample of Head Start children (N = 2,019) followed through…

Executive function (EF) skills play a crucial role in young children's academic and social-emotional development. Given that factors associated with poverty can compromise the development of EF skills, it is vital to continue to examine what factors help predict and support EF skills in children from at-risk backgrounds. Using a sample of Head…

Purpose: The aims of the study were to explore responses of children with developmental language disorder (DLD) to rich vocabulary instruction and to identify potential factors that contribute to outcomes. Method: Children with DLD participated in a language intervention embedded within a science camp. Using parent and clinician reports,…

A substantial body of research has demonstrated the efficacy of early writing interventions that target skills and composing processes; however, much less is known about the effectiveness of classroom writing instruction outside of the context of an intervention. The goal of this study was to investigate if writing instruction and student practice…

Despite the emerging evidence base on response to intervention, there is limited research regarding how to effectively use progress-monitoring data to adjust instruction for students in Tier 2 intervention. In this study, we analyzed extant data from a series of randomized experimental studies of a kindergarten supplemental reading intervention to…

The current study is one of the first to investigate children's perceptions of quality in teacher-child relationships using a narrative measure. It is also one of the first studies to investigate how the child's report is associated with the teacher's report and with an observer's report of quality in teacher-child interactions. Participants…

Research suggests that the relation between student-teacher conflict and children's externalizing behavior might be reciprocal, and possibly also between student-teacher conflict and children's social skills. Because children with externalizing behavior also tend to display low levels of social skills, we do not know if one or both of these…

Using a large, longitudinal data set that represents 701 state-funded pre-k classrooms and over 2,900 children enrolled in 11 states, the current study examined two hypotheses: (1) children would be perceived to be better adjusted at the beginning of pre-k when rated by a same-race teacher than by a different-race teacher, and (2) children would…

This study investigated the extent to which learning readiness, prior-to-school experiences, and child and family characteristics influence children's literacy and numeracy achievement across the first year of primary school. A sample of 104 kindergarten children was recruited from 16 classrooms and followed from the beginning to the end of their…

Premises about the effects of early engagement on achievement were investigated with 383 children who were followed from ages 5.5 to 13.5. Change and continuity in behavioral (cooperative-resistant classroom participation) and emotional (school liking-avoidance) engagement were assessed during Grades 1-3 and were examined within variable- and…

In the 1998 reauthorization of Head Start, Congress mandated that the US Department of Health and Human Services (DHHS) determine, on a national level, the impact of Head Start on the children it serves. As noted by the Advisory Committee on Head Start Research, this legislative mandate required that the impact study address two main research…

Head Start is the largest publicly funded preschool program in the U.S., and one of its primary goals is to improve the school readiness of low-income children. As has been widely reported, the first randomized trial of Head Start in the program's history found some evidence that it is achieving this goal. Receiving one year of Head Start had…