An information reading system comprising an information processing apparatus, a first information reading apparatus which is connected to the information processing apparatus and reads information on a sheet and a second information reading apparatus which is connectable to one of the information processing apparatus and the first information reading apparatus, and reads information on a sheet. The information processing apparatus comprises a control program including a first driver required to control the first information reading apparatus, and a second driver required to control the second information reading apparatus. Control information from the information processing apparatus to the second information reading apparatus is transmitted via the first driver and the second driver.