A printing system capable of properly selecting a printer driver without putting load on the user, and generating print data using the selected printer driver even when the operating apparatus cannot communicate directly with an information processing apparatus having a print data-generating function. The printing apparatus generates a list of printer drives notified from information processing apparatuses, and sends the list to the operating apparatus when requested. The operating system selects a printer driver from the list and sends information of the selection and image data to the printing apparatus. The printing apparatus sends the image data to an information processing apparatus provided with the selected printer driver. The information processing apparatus generates print data from the image data and sends the print data to the printing apparatus.