The Schools are organised with the involvement of two standing committees, an International Advisory Committee (IAC) whose responsibilities include defining the general framework and scope of the Schools, and selecting the host country for each School in the series, and an International Organising Committee (IOC) whose responsibilities include the definition of the scientific programme and the selection of the students for each School. In addition, there is an ad hoc Local Organising Committee (LOC) established for the practical organisation of each School in the series.