Similar to courseMode, the medium or means of delivery of the program as a whole. The value may either be a text label (e.g. "online", "onsite" or "blended"; "synchronous" or "asynchronous"; "full-time" or "part-time") or a URL reference to a term from a controlled vocabulary (e.g. https://ceds.ed.gov/element/001311#Asynchronous ).