A special network (IDAPP) including seven Italian Universities and three French University, plus three Laboratories (Italian, French, German) is active on the Astroparticle area. The students doing research in this area and full filling the network requests qualify for different types of support and will get a multiple diploma (information on the web side http://www.fe.infn.it/idapp/). The Ph.D School in Physics, Astrophysics and Applied Physics is the leader of a network including 25 European and non-European Institutions plus two German virtual Institutes (ISAPP). The network organizes common international schools in the Astroparticle physics, acknowledged at different level by Ph.D Schools in the world. Information on the web side http://www.mi.infn.it/ISAPP/.