Wieland Wermke is a Professor of Special education at Stockholm University. He has worked on special educators', teachers’ and school leaders' work in various national contexts. His particular interest is in comparative education with a focus on school systems development and structuring of professional practices of various types. Kirsten Sivesind is Professor of Education at the University of Oslo. Her research focuses on education policy, curriculum history, and didactics and how international and comparative assessments shape public education in Northern Europe. She also investigates how curricula structure educational conditions for teaching and learning in schools today.