Machine learning (ML) methods for causal inference have gained popularity due to their flexibility to predict the outcome model and the propensity score. In this article, we provide a within-group approach for ML-based causal inference methods in order to robustly estimate average treatment effects in multilevel studies when there is cluster-level…

Background/Context: The age at which children can enter kindergarten continues to be discussed in both educational research and practice, and the debate for whether to increase kindergarten entry age remains active on both sides. A critical oversight has been the lack of attention paid towards entry age for those students who begin school with a…

This study uses data from the Early Childhood Longitudinal Study, Kindergarten Class of 1998-1999 (ECLS-K), to examine the texts assigned to eighth-grade students. By comparing student demographic information from the ECLS-K with demographic information from the texts, we examine adjustment of assignments to match students' backgrounds. In…

Using data from the Early Childhood Longitudinal Study--Kindergarten cohort (ECLS-K), this study aimed to identify body mass index (BMI) trajectories from kindergarten to eighth grade using group-based trajectory modeling (GBTM), examine the relationships between BMI trajectories and adolescents' school achievement (reading and math), determine…

In elementary school, many children struggle in learning how to read. Some of these struggling readers will be identified to receive special education services as a student with a reading disability (RD), while other students will not be identified to receive such services but will continue to have low reading achievement (LRA). Limited research,…

In the United States a "civic engagement gap" persists between low-income youth and their higher-income counterparts. To examine the developmental origins of civic engagement in a sample of U.S. children growing up in poverty, a conceptual model was tested employing the Early Childhood Longitudinal Study-Kindergarten Class (ECLS-K)…

Using data from the Early Childhood Longitudinal Study Kindergarten Cohort of 1998 (n = 15,070), this study used propensity scores to examine the short- and long-term academic and psychosocial benefits of preschool education for a diverse sample of middle-class children. Compared with children who attended informal care at age 4, preschool…

The present study explores whether the relation between aspects of first-grade reading instruction and reading growth through eighth grade differed for Asian language minority (LM) children and native-English-speaking (NE) children. The sample consisted of 6,715 NEs and 242 Asian LMs, followed from first to eighth grade. Findings were as follows:…

Using data from the Early Childhood Longitudinal Study Kindergarten Cohort of 1998 (n = 15,070), this study used propensity scores to examine the short- and long-term academic and psychosocial benefits of preschool education for a diverse sample of middle-class children. Compared with children who attended informal care at age 4, preschool…

The present study used multiple regression analyses to examine the relationships between fifth-grade social skills and eighth-grade academic achievement. Data were drawn from the Early Childhood Longitudinal Study-Kindergarten Class of 1998-1999 (ECLS-K). Results indicated no relationship between positive or negative social behavior in fifth grade…

The present study used data from the Early Childhood Longitudinal Study--Kindergarten Class of 1998-1999 to examine whether the relationship between first-grade word-reading and reading-comprehension growth through eighth grade was different for language-minority learners (LMs) versus native English-speaking students (NEs). Among high word…

Single-timepoint educational measurement practices are capable of assessing student ability at the time of testing but are not designed to be informative of student capacity for developing in any particular academic domain, despite commonly being used in such a manner. For this reason, such measurement practice systematically underestimates the…

The analysis of 21,409 participants of the Early Childhood Longitudinal Study-Kindergarten cohort focused on home and school factors sought to understand the level of reading mastery that children experienced throughout elementary school and Grade 8 by relating home language use, timing of oral English language proficiency, and the provision of…

This study examines the pattern and extent of actual vs. perceived math achievement gaps (test scores vs. self-ratings) among Koreans, Korean-American immigrants and Korean-American natives. The study links TIMSS 2007 8th grade math data and ECLS-K 2007 8th grade math data together for matched sample (Korean ethnicity) comparisons. In terms of…

Recently, researchers have begun to employ rigorous statistical methods and developmentally-informed theories to evaluate outcomes for students retained in non-kindergarten early elementary school. However, the majority of this research focuses on academic outcomes. Gaps remain regarding retention's effects on psychosocial outcomes important to…