It represents how properly the student is undertaking within the disciplines. As talked about, it is the equal with the GPA. It can be calculated by the following method: C R = ∑ k = one N C C i ⋅ file ( N i ) ∑ k = one N C C i displaystyle CR=textstyle frac textstyle sum _ k=1 ^ NC C_ i cdot f(N_ i )displaystyle textstyle sum _ k=1 ^ NC C_ i