It signifies how perfectly the student is performing on the disciplines. As pointed out, it is the equivalent of your GPA. It might be calculated by the next method: C R = ? k = 1 N C C i ? f ( N i ) ? k = one N C C i displaystyle CR=textstyle frac textstyle sum _ k=one ^ NC C_ i cdot f(N_ i )displaystyle textstyle sum _ k=1 ^ NC C_ i displaystyle