The academic achievement of students is shaped by a complex interplay of personal, familial, and environmental factors. This study makes a novel contribution to the educational and public health literature by systematically investigating how various forms and contextual dimensions of physical activity relate to students' academic achievement…

Recent decades have witnessed a global expansion of private supplementary tutoring, known as shadow education--additional support in academic subjects that takes place outside of regular school hours. Using the data of 55 countries from the Programme for International Student Assessment (PISA) 2022, this study examines the association between…

We conducted three preregistered studies using the Organization for Economic Co-operation and Development Programme for International Student Assessment (PISA) data to provide a worldwide estimation of the standardized test gap between students from lower and higher social classes. We investigated: (a) the degree to which academic anxiety…

Countries across the world have seen a growing gap in mathematics performance between low-SES children and those from wealthier backgrounds. The issue of inequality not only relates to student performance, but also to schooling--as defined by the mathematics curriculum and its distribution of the related opportunities to learn. Whether…

A sizeable literature -- spanning education, sociology and economics -- has investigated the issue of parental school preferences and school choice. A notable gap in the existing evidence base is an exploration of how such preferences differ between mothers and fathers. We present new cross-national findings on this matter, drawing on survey data…

This article examines the extent to which parental socioeconomic status (SES) affects the likelihood of a child becoming a top-performing student, offering an international perspective by reporting this relationship in 31 developed countries. The impact of 3 important educational system characteristics (differentiation in terms of early tracking,…

Science education as a part of STEM education is becoming important not only for the future success of the individual but also for the economic development of the nation. This study explores the global pattern of extended education and its impact on learning outcomes in the area of science. First, the study found substantial national differences…

Few developing countries participate in external educational evaluations. Information gaps on education quality make it imperative to expand such evaluations. Furthermore, international comparability across different evaluations should be improved. In addition, data from evaluations must be combined with data on access or coverage. Finally,…

This dissertation explores how country-level cultural values are associated with gender differences in the enrollment in and completion of science, technology, engineering, and mathematics (STEM) Massive Open Online Courses (MOOC), national achievement in mathematics and science, and students' science achievement. Study 1 explored how gender-equal…

In 19 (sub)samples from seven countries (United States, Austria, Germany, Costa Rica, Ecuador, Vietnam, Brazil), we analyzed the impact of parental education compared with wealth on the cognitive ability of children (aged 4-22 years, total N = 15,297). The background of their families ranged from poor indigenous remote villagers to academic…

This Report Card presents an overview of inequalities in child well-being in 41 countries of the European Union (EU) and the Organisation for Economic Co-operation and Development (OECD). It focuses on 'bottom-end inequality' -- the gap between children at the bottom and those in the middle -- and addresses the question 'how far behind are…