There are provided a print control apparatus in which a load on a user can be lightened by reporting information on necessary processing, a method for controlling a print apparatus, and a print medium. A print control apparatus for controlling a print apparatus to print an image based on print data, the print control apparatus includes: a determination unit configured to determine whether a size of a sheet set in the print apparatus and a size of the print data match; an acquisition unit configured to acquire information on processing needed to adjust the size of the print data to be closer to the size of the sheet in a case where it is determined that the size of the sheet and the size of the print data do not match; and a notifying unit configured to notify a user of information acquired by the acquisition unit.