The core collaborators are:
- International Association for the Evaluation of Educational Achievement (IEA) Data Processing and Research Center, Hamburg, Germany
- Leibniz Institute for Science and Mathematics Education, Kiel, Germany
- Psychometric Society
- Network 1- Educational Measurement and Assessment (NERA)
CEMO and the partners have agreed on facilitating and supporting joint activities such as establishing means of regular exchange and communication, mutual research visits and stays of research personnel at the other institution, joint PhD supervision, joint symposia at scientific conferences, jointly applications for funding for international projects, for instance within the Horizon Europe funding scheme. CEMO team members also co-publish scientific articles and books with the partners.