Methods, systems, and computer program products are disclosed for differential dynamic content delivery. Typical embodiments include providing a session document for a presentation, wherein the session document includes a session grammar and a session structured document; receiving a prerecorded presentation control instruction; selecting from the session structured document a classified structural element in dependence upon the prerecorded presentation control instruction, in dependence upon user classifications of a user participant in the presentation, and in dependence upon a presentation history of the classified structural element; and presenting the selected structural element to the user. The presentation history further typically includes a classified structural element identifier; a user classification; a count of the number of times the classified structural element has been presented; and a count of the number of times the session document containing the classified structural element has been used in presentations.