PE&RC postgraduate courses are often organised together with other graduate schools, in particular Graduate Schools at Wageningen University and the Research School Ecology and Evolution (RSEE) of the University of Groningen. Besides being able to offer more courses and having more participants (reduced chance of cancellation), this collaboration clearly amplifies the interdisciplinary character of the courses which is a central element of the PhD learning objectives. Also, most postgraduate courses involve lecturers from abroad with excellent reputations in the relevant field.