The R score (French: cote de rendement au collégial, CRC or cote R) is a statistical method that classifies college students' academic performances in Quebec. It is used by Quebec universities for selection purposes.
The R score is in fact a z-score (Zcol) multiplied by a group dispersion indicator (IDGZ) to which an indicator of group strength (ISGZ) has been added.
R score
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{\displaystyle {\text{R score}}={\bigl (}(Z_{\mathrm {col} }\times {\text{IDGZ}}{\bigr )}+{\text{ISGZ}}+C)\times D}
where C = D = 5.
The Zcol is the number of standard deviations of student above the class average and gives an indication of the grade of the student with respect to the grades of other students in the class. The ISGZ is the average high school Z-score (Zsec) the group's students obtained on the MEES uniform examination subjects in Secondary 4 and 5. The IDGZ is the standard deviation of the students' Zsec scores. The inclusion of the ISGZ and the IDGZ in the determination of the R score allows for a more equitable comparison between students, regardless of their CEGEP's academic rank, but the effectiveness remains in dispute.
The use of the constant C = 5 greatly reduces the possibility of a negative value in the score and the multiplying the sum of all the preceding values by the constant D = 5 ensures the largeness of the score. The R score is defined such that the average is 25. Most R scores fall between 15 and 35, but any real number is a possible R score since the z-scores tend to positive or negative infinity as the standard deviation decreases. To guarantee that a grade of 100 produces an R score of at least 35, an adjusted Z score formula guaranteed to produce a result above 35 is used. Grades below 50 are not considered in calculating the average and the standard deviation of a grade distribution.
An R score is calculated for every course except for physical education taken before fall 2007 or for remedial courses. The final R score is the weighted average of the R score in all courses. In addition, failed courses are given a reduced weight in the overall R score and are weighted at 25% of the credits in the first semester and subsequently at 50%.
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