The project eQval is co-financed by the European Union. The opinions and viewpoints expressed in this publication are solely those of its authors and do not necessarily reflect those of the European Union or the Spanish Service for the Internationalisation of Education (SEPIE). Neither the European Union nor the SEPIE can be held responsible for them. This publication is available under the Creative Commons license ‘Attribution-ShareAlike 4.0 International’ (CC BY-SA 4.0) for free use and re-purposing by any interested party without violating the rights of the original authors.