Simon Smith said Joseph had a limited education.
Simon Smith to Joseph Smith III, 29 December 1880, Miscellaneous Letters and Papers, RLDS Church Library-Archives, Independence, Missouri. Published in Saints' Herald 28 (1 February 1881): 43, in Dan Vogel, ed., Early Mormon Documents, 5 vols. (Salt Lake City, UT: Signature Books, 1998), 2:382
"He also said that Joseph Smith Jun.'s means of support, and ed=ucation at the time of the translation of the plates was very limited. That he did not know how to draw up a note of hand properly, and knowing it was the will of got [God] to assist him he did so willingly."