Žaneta Džumhur is the assistant director for curriculum development at the Institute for the Development of Pre-University Education in Sarajevo Canton, Bosnia and Herzegovina. Before being named as the head of the sector in the Institute, Žaneta built up her experience as a mathematics teacher and a head of the Sector for Student Achievement Standards in the Agency for Preschool, Primary and Secondary Education. She dealt with external evaluations and implemented IEA studies and OECD PISA in Bosnia and Herzegovina with a focus on curriculum development and their implementation during instructions. Dr Paulína Koršňáková facilitates research networking, stakeholder engagement, and collaboration that enhance capacity building and knowledge sharing to foster innovation and quality in education. She has more than 20 years of experience in developing and implementing large-scale comparative studies at national, regional, and international levels. She serves as a series editor for the IEA Research for Educators and IEA Teacher Snippets. Dr Sabine Meinck is the co-head of IEA’s Research and Analysis Unit (RandA) and head of its Sampling Unit. She guides, supports, and coordinates IEA research activities, and fosters knowledge dissemination around statistical data analysis based on large-scale assessments. Since 2006, she has been involved with various aspects of the survey design of nearly all contemporary large-scale assessments in education.