Rokugan is a setting taking heavy influence from the '80s and '90s perception of medieval Japan (through a north-American lens) and strewing in influences from other East-Asian countries, creating the unique mashup fantasy world.
I know the core rulebooks stress that almost all Samurai are able to read and write the Rokugani script (which is pretty much Chinese/Japanese-expy), but I fail to find references for literacy rates in the general populous outside of the Samurai caste.
Merchants appear likely to be literate, but do the books give a ratio of literacy or if there is a general line? Like, can craftsmen, farmers, or people handling butchery read and write?