An electronic whiteboard system includes at least one information processing system and at least one electronic whiteboard communicably connected to the information processing system. The information processing system stores, in a memory, one or more content management information records in each of which content data, user information, and information on a period of time are associated with each other. The electronic whiteboard reads, from a terminal of a user, ID corresponding to user information identifying the user, transmits, to the information processing system, the ID and information on a time at which the ID is read, receives, from the information processing system, content data included in a content management information record that includes a period of time within which the time at which the ID is read is included and user information identical to the user information corresponding to the ID, and displays the content data.