PIRLS (Progress in International Reading Literacy Study) is the fourth assessment in the current trend series, following PIRLS 2001, 2006, and 2011. There were 61 participants in PIRLS 2016, including 50 countries and 11 benchmarking entities (e.g., regions of countries as well as additional grades or language groups from the participating…

To help explain the differences in students' performance on internationally administered science assessments, cross-national, video-based observational studies have been advocated, but none have yet been conducted at the elementary level for science. The USA and Germany are two countries with large formal education systems whose students…

The purpose of this study was to examine the technical (psychometric) adequacy of office discipline referrals (ODRs) as a behavioral assessment tool for individual student, data-based decision making within a problem-solving model. Participants were 990,908 students in 2,509 elementary schools. Students were grouped into ODR cut points of 0-1,…

The purpose of this study was to determine how elementary school administrators in a large U.S. state perceived the overall effects of testing on education in general and, more specifically, on their instructional leadership responsibilities. We surveyed 325 Florida principals and assistant principals, many of whom viewed the testing program…

Interest in single-sex classes continues to grow in the United States, but there has been little research at the elementary level in this country or elsewhere to help guide educators' decision-making about the overall value of single-sex classes in public schools and the specific value of single-sex classes in public schools for increasing boy's…