I'm looking for an educational French film titled "La Nuit Silencieuse" - The Night of Silence. It was probably made between 1900-1950, though closer to 1950 I'm assuming. It is about a Catholic school in France where deaf, dumb, and blind girls and boys, taken care of by Sisters and Brothers, were taught Christianity through their sense of touch.
So far querying AI and brief searches of some French movie/cinema related databases have not returned the desired result.