An image forming system includes: a print instruction terminal; and a print apparatus having a printing unit that prints print data instructed to be printed from the print instruction terminal. The print instruction terminal includes: a setting information receiving unit that receives print setting information including paper attributes; a loading method displaying unit that displays a method of loading paper corresponding to the print setting information received by the setting information receiving unit in a feeding unit of the print apparatus; and a transmitting unit that transmits the print setting information. The print apparatus includes a print controlling unit that receives the print setting information and controls the printing unit to print the print data instructed to be printed from the print instruction terminal based on the print setting information when the paper is loaded in the feeding unit.