The reason why the school's student ID card has not been issued is that the school registration, production cycle and audit process are busy.

1. School registration is busy: the new semester begins, and the workload of various departments in the school is heavy, which may affect the speed of issuing student ID cards.

2. Production cycle: The production of student ID cards takes some time, including typesetting, printing, stamping and other links, which may lead to delays in issuance.

3. Review process: The school may strictly review the information of the student ID card to ensure that it is correct before issuing it. This will also affect the delivery speed to some extent.