Patent ID: 7764923

Claim:
A material processing apparatus comprising: a reader unit that reads a material that includes first information written by a first user and second information written by a second user, the second information including an affirmative figure and a negative figure evaluating the first information written by the first user, the first information being a plurality of answers written by the first user, the affirmative figure being a figure indicating that an answer is correct, the negative figure being a figure indicating that an answer is incorrect, the affirmative figure and the negative figure being different in shape; a judgment recognition unit that recognizes the affirmative figure and the negative figure from the material read by the reader unit by performing shape recognition on the second information; an order calculating unit that determines an order of the affirmative figure and the negative figure in accordance with positions of the affirmative figure and the negative figure on the material; and a grade determination unit that grades the material based on the order determined by the order calculating unit.