An information processing apparatus comprising: first acquisition means configured to acquire a measurement result obtained by measuring a characteristic value of a printing medium to be printed; second acquisition means configured to acquire reference characteristic values set in advance for each of types of printing medium to identify a type of the printing medium; input means (406, 405, 201) configured to input information indicating a type of the printing medium to be printed; and control means configured to control an operation to determine a type of the printing medium to be printed, change means configured, based on the measurement result acquired by the first acquisition means, to change a reference characteristic value set in advance for the type of printing medium indicated by the information input by the input means, wherein the control means is configured to determine the type of printing medium indicated by the information input by the input means as the type of the printing medium to be printed, the control means is configured to be capable of executing a measurement mode and a designation mode, wherein in the measurement mode, the type of the printing medium to be printed is determined by using the measurement result acquired by the first acquisition means and the reference characteristic values set in advance and acquired by the second acquisition means, and in the designation mode, the type of the printing medium to be printed is determined without using the measurement result acquired by the first acquisition means, and the control means is configured to, even in the designation mode, cause the first acquisition means to acquire the measurement result and cause the change means to change the reference characteristic value set in advance for the type of printing medium indicated by the information input by the input means based on the measurement result acquired by the first acquisition means. first acquisition means configured to acquire a measurement result obtained by measuring a characteristic value of a printing medium to be printed; second acquisition means configured to acquire reference characteristic values set in advance for each of types of printing medium to identify a type of the printing medium; input means (406, 405, 201) configured to input information indicating a type of the printing medium to be printed; and control means configured to control an operation to determine a type of the printing medium to be printed, change means configured, based on the measurement result acquired by the first acquisition means, to change a reference characteristic value set in advance for the type of printing medium indicated by the information input by the input means, wherein the control means is configured to determine the type of printing medium indicated by the information input by the input means as the type of the printing medium to be printed, the control means is configured to be capable of executing a measurement mode and a designation mode, wherein in the measurement mode, the type of the printing medium to be printed is determined by using the measurement result acquired by the first acquisition means and the reference characteristic values set in advance and acquired by the second acquisition means, and in the designation mode, the type of the printing medium to be printed is determined without using the measurement result acquired by the first acquisition means, and the control means is configured to, even in the designation mode, cause the first acquisition means to acquire the measurement result and cause the change means to change the reference characteristic value set in advance for the type of printing medium indicated by the information input by the input means based on the measurement result acquired by the first acquisition means.