The judiciary of Italy is a system of courts that interpret and apply the law in the Italian Republic. In Italy, judges are public officials and, since they exercise one of the sovereign powers of the State, only Italian citizens are eligible for judgeship. In order to become a judge, applicants must obtain a degree of higher education as well as pass written and oral examinations. However, most training and experience is gained through the judicial organization itself. The potential candidates then work their way up from the bottom through promotions.