Theo Wubbels is emeritus professor of educational sciences at the faculty of Social and Behavioural Sciences of Utrecht University in the Netherlands. He has been involved for over 40 years in teaching and research on teacher-student relationships, learning environments, and staff development in primary, secondary, and higher education.

Perry den Brok is professor of education and learning sciences at the Department of Social Sciences of Wageningen University and Research in the Netherlands. He is also teacher educator, supervises several PhD students, and head of the group on education and learning.

Luce Claessens is an associate professor at the Department of Education at Utrecht University in The Netherlands and director of the teacher education program for primary education. She teaches on interactions in class and research in schools.

Tim Mainhard is professor of Educational Sciences and head of the primary teacher education programs at Leiden University. He teaches classroom management and research methods.

Jan van Tartwijk is professor of education and vice-dean for graduate education at the faculty of Social and Behavioural Sciences at Utecht University in the Netherlands. He teaches in the university's graduate school for teacher education and is involved in research projects on teacher-student communication, teacher expertise, and curriculum and assessment.