Christian Schneijderberg holds a PhD in sociology and is a senior researcher at the International Center for Higher Education Research at the University of Kassel, Germany.

Oliver Wieczorek holds a PhD in sociology and is a senior researcher in governance and organization at the International Center for Higher Education Research at the University of Kassel, Germany.

Isabel Steinhardt is a professor of sociology of education and head of the department of sociology at Paderborn University, Germany.