A publication of Tasks from IBOs 2013-2015 can now be pre-ordered by IBO-members in our publications section. The cost is 25 Euros / copy. Pre-ordered books will be handed over to you at IBO 2022 in Yerevan / Armenia.
Opitz, S. & Schroeter, B. (2021). IBO Assessments: Theoretical and Practical tasks from 2013 to 2015. Kiel, IPN. ISBN: 978-3-89088-309-0