对的，学生好像是五折优惠

I know this answer. You can find the phone number of requirement of discount in SAS website or email your requirement to them. Then they will ask you copy your student card and photo id to send to them. After it you can get a discount number for register your exam. That's it. Oh, you must be a full time student.

Thanks a lot!!!

谢谢，长见识了~~