There is provided a written examination system in which paper consumption and flowing out of examination questions in a written examination may be prevented. The written examination system according to the present invention comprises: a display device 12 used by each examinee taking a written examination; and an information processing device 16 providing examination question data to the display device 12. The display device 12 includes: a display part 124 including electronic paper on which examination question data is displayed; a receiving part 121 receiving the examination question data from the information processing device 16; and a display control part 123 controlling the display state of the examination question data on the display part 124. The information processing device 16 includes: a question data storing part 163 storing the examination question data; and a transmission control part 162 controlling transmission of the examination question data to the display device 12.