How Literate are your D&D Worlds?

[PhoenixPhyre]

Prior to the printing press the majority of the population wasn't Literate and it always made sense to me that literacy rates in d&d would be similar

But many (if not most) D&D worlds do have the printing press (or the functional equivalent). And things like wanted posters (printed), broadsheets (printed), publishing houses, etc are common in many of the worlds.

D&D is not medieval. It's anachronistic (because fictional).