We studied the effect of the number and characteristics of siblings (sex, age) on school achievement in several grades (kindergarten, first grade, and fifth grade), in two large French cohorts, with more than 16,000 children. Running linear mixed-effects models, we find that, independently of socioeconomic status, having more siblings is…

California's K-12 funding and instructional policies for English learners (ELs) have changed significantly over the past 2 decades. The major policy shifts held the potential to change student learning outcome patterns for ELs. As a first step in identifying the potential impacts of these policy shifts, this report describes changes over time in…

Since 2007, nineteen Houston Independent School District (HISD) campuses have partnered with Literacy Now to offer the Reading Intervention program. The Reading Intervention program provides individualized, small group reading tutorials for at-risk students in kindergarten to second grade to create proficient readers by the end of third grade.…

The "Experimental Evaluation of the Tools of the Mind Pre-K Curriculum" study was designed to compare the effectiveness of the "Tools of the Mind" ("Tools") curriculum to the curricula the school system is currently using in enhancing children's self-regulation skills and their academic preparation for kindergarten.…

Policies of inclusion challenge the construct of readiness and require schools to prepare for the diversity of children as they transition to school. However, there is limited empirical evidence concerning how this challenge is met. This paper presents two Australian studies that investigate inclusive practices in the transition to school. Study 1…

This study investigated to what extent primary school teachers' perceptions of their students' ability and effort predict developmental changes in children's self-concepts of ability in math and reading after controlling for students' academic performance and general intelligence. Three cohorts (N?=?849) of elementary school children and their…

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…

Traditional measures of reading ability designed for younger students typically focus on componential skills (e.g., decoding, vocabulary), and the items are often presented in a discrete and decontextualized format. The current study was designed to explore whether it was feasible to develop a more integrated, scenario-based assessment of…

Accurately measuring and modeling academic achievement growth is critical to support educational policy and practice. Using a nationally representative longitudinal data set, this study compared various models of mathematics achievement growth on the basis of both practical utility and optimal statistical fit and explored relationships within and…

Traditional measures of reading ability designed for younger students typically focus on componential skills (e.g., decoding, vocabulary) and the items are often presented in a discrete and decontextualized format. The current study was designed to explore whether it was feasible to develop a more integrated, scenario-based assessment of…

The strong differences in manifestation, prevalence, and incidence in dyslexia across languages invite studies in specific writing systems. In particular, the question of the role played by emergent literacy in opaque and transparent writing systems remains a fraught one. This research project tested, through a 4-year prospective cohort study, an…

This study examines the effect varying models have on student understanding of fractions. The study addressed the question of what students know and understand about fractional concepts through the use of discrete and continuous models. A sample of 54 students in kindergarten and 3rd grade were given an interview pretest, participated in…

Teachers spend most of their time in school in classrooms, and their instruction and teaching practices may be affected by classroom context such as class size. We examine whether teacher effects interact with classroom context such as class size. Specifically, we seek to determine whether teacher effects are more pronounced in small classes than…

We use two nationally representative data sets to estimate the prevalence of kindergarten "redshirting"--the decision to delay a child's school entry. We find that between 4% and 5.5% of children delay kindergarten, a lower number than typically reported in popular and academic accounts. Male, White, and high-SES children are most likely…

The experimental evaluation of the "Tools of the Mind Pre-K Curriculum" described in this report was designed to examine the effectiveness of the "Tools of the Mind" ("Tools") curriculum for enhancing children's self-regulation skills and their academic preparation for kindergarten when compared to the usual…