Student Cards (学生証 Gakuseishō) is a student ID that represents a student of an idol school. In the Data Carddass Aikatsu! game, this card is named IC Cards.
Theory of Usage
In the arcade game, these are called IC Cards to store a player's history and create original characters. The Data Carddass Official IC Cards and Aikatsu! Original IC Cards are capable to be used up to 400 times while the Trial one only can be used for 100 times. Some other special ones for example: 3DS IC card special edition and shop opening special IC cards are also capable of being used 100 times.
The card is required to access the Aikatsu System; however, it is not required if the student isn't from any idol training school, and is taking an entrance audition or has graduated from the school. Ichigo, however made an exception when she returned from America, her performance did not require the Student ID.