The authors who are mathematics teacher educators, have found that classifying, composing, and transforming shapes (in particular, rotations and reflections) are areas of difficulty for adults as well as for children. However, these are also some of the most important geometric ideas. They are fundamental topics in the K-8 Geometry and Measurement…

Much of the literature estimating disproportionality in special education identification rates has focused on socioeconomic status, race, and gender. However, recent evidence suggests that a student's school starting age also impacts the likelihood they receive special education services, particularly in the early grades. I build on the evidence…

Background: Ability grouping has resurged in U.S. schools despite long-standing debates over its consequences for educational equity. Proponents argue that it is the best response to variation in academic skills because it allows teachers to customize the content and pace of instruction to students' diverse needs. Critics answer that this practice…

The development of proofs and argumentation is one of the major standards for mathematical practices in K-12 education that researchers and practitioners alike are continuing to improve. Further, the use of discourse is considered essential in the learning of mathematical concepts at these levels. However, K-12 educators continue to confound how…

The NGSS Early Implementers Initiative was created to help eight California school districts and two charter management organizations, supported by WestEd's K-12 Alliance, implement the Next Generation Science Standards (NGSS). Many educational initiatives are funded for only a couple of years. This unique initiative spanned an extraordinary six…

Purpose/Objectives: In 2009, the Smarter Lunchroom Movement (SLM) strategy was created to provide schools across the United States (US) with evidence-based solutions to encourage healthier eating among children. Results, though, are inconsistent with how well this movement impacts school-aged children's healthy food selection and consumption.…

Using a DisCrit intersectional lens and statistical and spatial methods, we trace how the creation of K-8 schools functioned to create pockets of privilege in one urban U.S. school district. K-8 schools were both whiter and wealthier than district averages, serving as "enclave" schools. Although far fewer students with disabilities were…

The National Science Foundation GK-12 program, started in 1999, partnered university STEM undergraduate and graduate students with K-12 classroom teachers to co-teach inquiry science "to boost the content of elementary and secondary education and the quality of graduate and undergraduate education at the same time" (Colwell, 1999). The…

Low-income and racial/ethnic minority children are at increased risk of experiencing summer reading loss or declined reading levels due to time away from school. The purpose of this study was to determine whether a 6-week summer reading program would help children maintain or improve reading levels. Four-hundred-fourteen African American and…

Over the course of six years, a diverse group of school districts and charter management organizations in California ran a substantial experiment in implementing the Next Generation Science Standards (NGSS) in elementary and middle grades. WestEd led an extensive evaluation of that effort, the California K-8 NGSS Early Implementers Initiative,…

Teacher leaders are often responsible for providing professional development to improve teacher effectiveness and student learning. Leading professional development for teachers can be highly effective when the focus is on student learning in on-going and relevant contexts. This article describes a school-based, teacher-led collaborative process…

It has been common knowledge for decades that poor and working-class students tend to experience "summer learning loss," a drop in performance between spring and fall that serves to widen the gap between students. However, new research shows that the reality of summer learning loss is more complex. Megan Kuhfeld draws on data from the…

This report summarizes Austin Independent School District (AISD) English learner students' (ELs) Texas English Language Proficiency Assessment System (TELPAS) performance on the 2019 Spring test administration. Student performance is summarized by domain and composite ratings, years in U.S. schools, and yearly progress.

Childhood exposure to traumatic experiences and subsequent psychological symptoms increase the risk for lifelong behavioral and mental health problems, including depression diagnoses, reduced adaptive coping strategies, substance abuse, and early death, with negative impacts on children's social development and academic achievement.…

This 13th report in WestEd's evaluation of the K-8 Early Implementers Initiative for the Next Generation Science Standards (NGSS) provides an extensive response to the following question: What does NGSS science teaching look like in the classroom? The report first discusses Initiative teachers' experiences with four instructional practices that…