What the officer would look, assess and review for deciding your application is in accordance with the regulations, in particular for article 39 - in which most of the applicants failed to demonstrate meeting of what the regulations stated therein; “ the modalities of providing the guarantee of economic coverage by bodies or Italian citizens or foreign citizens legally resident of the state’s territory providing the foreign student’s availability of sufficient means of support” thus, among other issues when examining your entry visa in Italy which may lead your student entry visa to be rejected. Two (2) Major Grounds for the rejection of your student visa entry in Italy http://www.visaonlineassistance.com/2017/11/17/2- tips-for-an-entry-visa-to-study-in-italy/