The term ‘outdoor learning’ covers many forms of practice outside the classroom, including Forest School and outdoor play. Outdoor learning has been rapidly growing as a topic of interest for educators and parents over the last ten years, and research published in this field is also increasing. Despite the fact that we are inextricably part of the natural world, there is concern that contemporary children have become disconnected from nature and that their opportunities to access natural environments are declining. Given compelling evidence that time spent in natural places has multiple benefits for human health and wellbeing and pro-environmental behaviour (Bourn et al., 2016), there is an impetus to find ways to increase children’s exposure to and attachment to nature through their education. The chapters in this book were originally peer-reviewed articles published in Education 3–13: International Journal of Primary, Elementary and Early Years Education. They are amongst the most popular in the journal, reflecting the demand for more evidence of outcomes and high-quality information about how best to implement outdoor learning for children in this age group. The authors report qualitative and quantitative studies and consider implications of the findings for children and their development, and for the integration (or not) of natural environment contexts within school practices. Gathering this body of evidence together in a single volume enables important messages about outdoor learning’s various purposes, processes and outcomes to be more readily accessed by practitioners, policy makers and researchers.