Successful education systems are able to guarantee that all students succeed at high levels. Across OECD countries …, around 60% of the overall, country-level variation in student performance can be traced to differences in how well students …

Children spend about a third of their waking hours in school during most weeks in the year. Thus, schools have a … significant impact on children’s quality of life – including their relationships with peers and adults, and their dispositions … towards learning and life more generally. Longitudinal studies suggest that students’ results on the PISA test are correlated …