There's been a debate kicking around for a while that Jesus was illiterate. This idea is promoted by John Dominic Crossan and the Jesus Seminar people.
Bible scholar, Ben Witherington, Amos Professor of New Testament for Doctoral Studies at Asbury Theological Seminary, tackles the issue and puts to rest the idea that Jesus was an illiterate peasant. Read his argument in the following well-written three-part series. Read more about Was Jesus illiterate? A bible scholar answers