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 with how well students will do later on in life; but strong performance in standardised assessments like PISA explains only so much of future results in other endeavours. Success and well-being in life also depend on how well students have been able to develop socially and emotionally.