Sotiria Grek is Professor in European and Global Education Governance at the School of Social and Political Science, University of Edinburgh, UK.

Christian Maroy is Emeritus Professor of Sociology at UCLouvain, Belgium and a researcher for GIRSEF, a research centre of which he is the co-founder and former director.

Antoni Verger is Associate Professor of Sociology at the Universitat Autònoma de Barcelona (UAB), Spain and a research fellow at the Catalan Institution for Research and Advanced Studies (ICREA).