Who was a student of the developer of a method that became known as the Salesian Preventive System?
Dominic Savio: Dominic Savio (Italian: "Domenico Savio" ; April 2, 1842 – March 9, 1857) was an Italian adolescent student of Saint John Bosco. John Bosco:  He developed teaching methods based on love rather than punishment, a method that became known as the Salesian Preventive System.
Dominic Savio