The term transmission refers to the idea of passage, of communication, allowing or opening to new possibilities, whether they are perceived as positive or on the contrary negative.
What is transmitted is endowed with a value, and cannot be discussed, for it is established by the force of a tradition (religious dogma), or of proof (eg knowledge).
The transmission is supposed to bring out of childhood (initiation rites), ignorance, it acculturates, produces a civilizing effect, social and professional integration. It has a powerful intergenerational effect, as it saves the time of trial and error, and provides the behavioral and intellectual achievements recognized by a group existing at a given time.
This transmission is ensured by institutions, especially educational ones: the family, on an individual basis; school, in a more collective way. But also churches, businesses, unions, associations …