Heidi Harju-Luukkainen is Professor of Education at Nord university, Norway. She holds a Ph.D. in education, special education teacher qualification and a qualification in leadership and management from Finland. She has published more than 100 international books, journal articles and reports as well as worked in more than 25 projects globally. She has developed education programs for universities, been a PI of PISA sub-assessments in Finland and functioned as board professional.Nele McElvany is a professor and the executive director of the Center for Research on Education and School Development (IFS) at TU Dortmund University and has been a member of its board of directors since 2010. She heads the working group “Empirical Educational Research with a Focus on Teaching and Learning K-12”. Her research is on designing in-depth, cross-sectional and longitudinal studies using questionnaires, tests, video-based observations and experimental designs with large-scale data analyses. Her work on individual, social and institutional conditions of educational processes and outcomes is nationally and internationally presented in conferences and publications.Justine Stang is a postdoctoral researcher at the Center for Research on Education and School Development (IFS) at TU Dortmund University. She earned her PhD in Psychology in 2017. Her recent work focuses on social and educational psychology research themes like stereotype threat, instructional quality or teacher judgement accuracy. Her research is on cross-sectional and longitudinal studies using questionnaires, tests and experimental designs with large-scale data analyses. Her work is nationally and internationally presented in conferences and publications.