| Austria | Association of Austrian Adult Education Centres |
| Austria | Federal Ministry of Education, Dpt. II/5 Adult Education |
| Belgium | Ligo, Centres for Adult Basic Education |
| Belgium | Lire et Écrire |
| Belgium | Vrije Universiteit Brussels (VUB) |
| Bulgaria | Ministry of Education and Science |
| Czech Republic | Association of Adult Education Institutions CR |
| Czech Republic | Ministry of Education Youth and Sports – Adult Education Unit |
| Czech Republic | National Institute for Education |
| Cyprus | Cyprus Ministry of Education, Sport and Youth (MESY) |
| Denmark | Folkuniversity, Oesthimmerland |
| Denmark | Department of Education, Aarhus University |
| Denmark | Ministry of Education |
| Denmark | Nordic Network for Adult Learning (NVL) |
| Denmark | VUC Storstrøm |
| Estonia | Association of Estonian Adult Educators Andras |
| Estonia | Estonian Non-formal Adult Education Association |
| Germany | Association of the Saarland Adult Education Centres |
| Germany | German Institute for Adult Education (DIE) |
| Germany | German Adult Education Association (DVV) |
| Germany | Morgenstrom |
| Greece | Ministry of Education and Religious Affairs
General Secretariat for VET and Lifelong Learning
|
| Hungary | MODUS Foundation |
| Hungary | National Office of VET and Adult Learning |
| Hungary | The Association for Lifelong Learning (ALLL) |
| Ireland | AONTAS The National Adult Learning Organisation |
| Ireland | National Adult Literacy Agency (NALA) |
| Italy | International Centre for the Promotion of Education and Development (CEIPES) |
| Italy | Italian Teachers and Principals Association- ADI |
| Italy | National Institute for the Analysis of Public Policies (INAPP)
|
| Latvia | Ministry of Education and Science |
| Liechtenstein | Adult Education Liechtenstein Foundation |
| Lithuania | Qualifications and Vocational Education and Training Development Centre |
| Luxemburg | Department of adult education (Ministry of education, Luxembourg) |
| Malta | Malta College of Arts, Science and Technology (MCAST) |
| Malta | Directorate for Research, Lifelong Learning and Employability (MEYR), Ministry for Education, Sport, Youth, Research and Innovation |
| Montenegro | Public institution The Centre for Vocational education |
| Netherlands | Hogeschool Utrecht / HU University of Applied Sciences Utrecht |
| Netherlands | Reading and Writing Foundation |
| Netherlands | National Library of the Netherlands, Koninklijke Bibliotheek (KB) |
| Netherlands | New Veste Breda |
| Netherlands | CINOP |
| North Macedonia | Adult Education Center |
| North Macedonia | Alliance for Development of Adult Education and Lifelong Learning in the Republic of North Macedonia |
| Norway | Educational Association AOF Norway |
| Norway | Fretex Pluss AS |
| Norway | Folkeuniversitetet Adult Education Association |
| Norway | Fonix AS |
| Norway | Municipal Adult Education Association |
| Norway | Prios Kompetanse AS |
| Poland | Educational Research Institute |
| Portugal | Faculty of Social Sciences and Humanities, NOVA University Lisbon |
| Romania | Bucovina Institute |
| Romania | Center for Promoting Lifelong Learning – CPIP |
| Romania | Romanian Institute for Adult Education (IREA) |
| Slovak Republic | Ministry of Education, Research, Development and Youth of the Slovak Republic |
| Slovak Republic | State Vocational Education Institute |
| Slovak Republic | Teamwork for a Better Future – Veľký Meder |
| Slovenia | Ministry for Education, Science and Sport |
| Slovenia | Slovenian Institute for Adult Education (SIAE) |
| Slovenia | STEP Institute
|
| Slovenia | ZLUS Association of Slovenian Adult Education Centres |
| Spain | Catalan Association for Education, Training and Research (ACEFIR) |
| Spain | Gentis Private Foundation |
| Spain | Office of Educational Regulation and Assessment (Ministry of Education and Sports of Regional Government in Andalusia) |
| Spain | Spanish Observatory of Validation of Professional Competencies (OBSERVAL) |
| Sweden | Swedish National Agency of Education |
| Switzerland | Academia Education AG |
| Switzerland | Akrotea.ch GmbH |
| Switzerland | Flying Teachers Ltd. |
| Switzerland | Swiss Federation for Adult Learning (SVEB) |
| Switzerland | Swiss Association of Reading and Writing |
| Switzerland | Department of Education and Culture, Division of Adult Learning and Higher Education |
| United Kingdom | Education Scotland |
| United Kingdom | National Learning and Work Institute |
| United Kingdom | RaPAL / Research and Practice in Adult Literacies
|
| United Kingdom | UCL Institute of Education |
| United Nations | UNESCO Institute for Lifelong Learning (UIL) |
