This volume provides an overview of the themes and challenges in curriculum thinking and practice that currently engage policymakers and practitioners across the East Asian and Southeast Asian region. It addresses issues of policy development and implementation, and considers the notion of transversal in a broader sense, including whether the implementation of non-academic concepts can indeed traverse disciplinary, cultural and contextual boundaries. Consisting mainly of contributions by authors from ASEAN and neighboring countries, the volume reflects a distinctly regional perspective and provides a view of national and smaller-scale initiatives, as well as chapters setting these initiatives in an international context. It touches on policy and curriculum development, teaching and learning materials, teacher development, and skills assessment, thereby implicating broad definitional issues as well as specific implementational aspects.