The scholarship system at SNU is pretty complex.
Initially it is only for the first year. But if you maintain a CGPA of 6 then your scholarship remains intact. But keep in mind the following cases-
After your first year you have to maintain your SGPA(6) every semester. If you fail to do so then you end up giving full fees for the semester.
Eg –
1. You get a CGPA above 6 in the first year, you retain your scholarship for the 3rd semester. To retain it for the 4th semester, you have to get SGPA above 6 in the 3rd semester.
2. You get SGPA below 6 in first semester, no worries, you are still in your scholarship band, perform well in the 2nd semester to get a CGPA of 6+, scholarship remains intact.