Recognition of prior learning (RPL) has emerged in recent decades as an important policy area and policy concept. It is a phenomenon with a certain variation in practices as well as contexts, concepts and conceptions. However, there is a basic idea about giving recognition to prior learning wherever and whenever learning has taken place. Such ideas can be ‘materialised’ in formal assessment systems providing the basis for recognition, as well as in informal processes where prior learning is made visible and gets recognition. This book provides a range of empirically and theoretically based contributions from different parts of the world where RPL, or an equivalent, is mobilised as part of educational practices for adults. Discussion in this area often takes place locally. This volume compiles different kinds of contributions to create a broader dialogue among scholars and practitioners, not only on the specific topic of RPL, but also on more general issues faced in educational research. It was originally published as a special issue of the International Journal of Lifelong Education.