He was also the Rector of the Academy of Amiens, Rector-Chancellor of the Académie de Paris, one of the founders of and a professor of the University of Paris-VII, and Chairman of the board of directors of the Agence universitaire de la Francophonie (AUPELF).
Mallet taught in Madagascar from 1959 to 1964, where he founded the Faculty of Letters at the University of Antananarivo, of which he was the first Dean.
[1][2][3] He returned to France, and worked for the French Ministry of National Education.
[1][8] From 1972 to 1975, Mallet chaired the board of directors of the Agence universitaire de la Francophonie (AUPELF).
Mallet worked at the Office de Radiodiffusion Télévision Française, where he was known for his interviews with Paul Léautaud or Jean Paulhan and for a series of documents on the French National Library.