The research program is part of the Dutch Interuniversity Center of Educational Sciences (abbreviated as ICO). ICO prescribes for example that all its associated PhD students follow an introduction course in year 1. In further years some other obligatory course have to be followed of which, for example, one on methodology or a thematic course. All regular PhD students follow at least 500 hours of education, preferably in their first years as a PhD. Additional courses to be followed are free to choose. See a complete overview of the ICO courses, the structure and organization here.