It's not easy to tell. Here's an excerpt from Marilu Romano's article, now online. This snippet deals with the infamously mediocre universities in Sicily, just one small part of the Sicilian mosaic:
"Italy's universities are undistinguished, marked by nepotism... In Sicily the Brain Drain is very real.. In 2011 a grade-selling scandal came to light at the University of Palermo. Yes, staff (though not professors) were altering transcripts and other student records, charging a few hundred euros for each mark modified."