The result of a multi-year study, this book explores how five school systems - British Columbia, Estonia, Finland, Hong Kong and South Korea - have been rethinking and reforming their schools systems. It addresses questions including: What policies need to be in place for every child to experience an engaging and supportive learning environment that motivates not only high performance but a desire to keep learning? What do students really need to know and be able to do to thrive in a changing world? How can systems engage in ongoing improvement while also cultivating innovation? The book provides a framework for looking at learning systems comprehensively, with chapters focused on system aspirations; curriculum and assessment; student, teacher, and leader support; and the ecosystem that supports learning.