The PhD students can attend any international schools that pertain to their topic of research in order to specialize the studies and create networking. Their choices have to be approved in advance by the PhD Committee. The list that follows is therefore not exhaustive and gives only some suggestions taken from the participation of PhD students of the previous years.
PhD School Bertinoro
The national PhD school in Computer Science
http://www.cs.unibo.it/projects/biss2017/index.html
PhD School Lipari
The national PhD school in Computer Science