This book showcases cutting-edge theory and practice in the development and integration of 21st-century skills in the language classroom. Well-known ELT experts as well as teacher educators, practitioners and leaders from around the world explore how creativity, collaboration, critical thinking, inclusion, well-being, leadership, and other key new literacies can be developed in both formal and informal learning contexts. The book brings seasoned and novice teachers, trainers, researches and policymakers up to date with developments in this increasingly important field in language education.