A display system has a display device, a display control device, and a laser emitting device. The display device has a display part that displays information on a display screen and a laser detection part having a plurality of optical sensors arranged in the vicinity of the display screen of the display part to detect a laser beam that has reached the display screen. The laser emitting device has an instruction input part that inputs an instruction with respect to the displayed information and a laser output part that outputs the laser beam including output information corresponding to the inputted instruction. The display control device has a position calculation part that calculates a position of the display screen irradiated with the laser beam based on positions of the optical sensors that have detected the laser beam, a received information acquiring part that acquires the output information included in the laser beam detected by the optical sensors and a display control part that controls a display of the information displayed on the display part, based on the position calculated by the position calculation part and the acquired output information.