The Tax Identification Number (Codice Fiscale) is an individual tax identification code that is often required in Italy for all sorts of procedures (e.g. opening a bank account, appliyng for the National Health Service - NHS, renting a flat, applying for a fixed telephone line or mobile etc.).
If you are an EU or a non - EU student, you do need to apply for it.
It is free of charge.
You can contact the Campus Management and Front Office of the School (email@example.com), that will help you out with the application form filling and forward it to the local Revenue Agency (Agenzia delle Entrate).