In the school network of the EEOBSS Project are involved six Bulgarian secondary schools: 119th Secondary School “Accad. M. Arnaudov” (Sofia) | Secondary School “Nikola Y. Vaptsarov” (Asenovgrad) | 7th Secondary School “Kouzman Shapkarev” (Blagoevgrad) | Secondary School “Vicho Grancharov” (Gorna Oryahovitsa) | Secondary School “Ivan Vazov” (Pleven) | OMG “Accad. Kiril Popov” (Plovdiv).