Editorial: Evaluation as the 'eternal' challenge: Opportunities and innovations in demonstrating value in ever-changing peer learning environments

This is the editorial for Volume 14 of the Journal of Peer Learning, which offers a rich range of informative and stimulating articles spanning a number of disciplines and countries. The ongoing need to evaluate the impact of peer learning programs provides the opportunity to incorporate new perspectives and focuses, yet it also presents ongoing challenges. However, the multiple lenses that inform evaluative research contribute to the rich literature on peer learning, as shown in the articles in this volume of the journal where, although thematically different, evaluation is a consistent thread throughout.