CU student card balance

[goodtime]

I want to use the student card to buy textbook to save 5%, I want to put more money than need.
Can the balance of the student card be used for the next year?
If the balance is less than $5, is there any extra fee charged by the University?
When I graduate, can I take back the balance?
:blowzy:

 

[punkren]

钱可以留到以后的学期用
剩多少钱都不会charge你
毕业后可以向学校申请退回余额