How the R Score Is Calculated and Why Your CEGEP Program Changes It
By Muntasir Minhaz • Published Aug 19, 2026 • Admissions & Applications, Canadian Universities & Colleges
Your R score comes from a formula: R = ((your college Z score x group dispersion) + group strength + 5) x 5. It adjusts your grade for how strong and how spread out your specific CEGEP class was, so the same 85% produces a different R score at two different CEGEPs.
🎓 Quebec universities adopted the R score in 1995 to compare grades across different CEGEPs fairly
📩 The formula has three parts: your class rank (Z score), your class's average strength, and your class's spread
⏱️ Failed courses count for only 25% of their credit weight in your first term, 50% after that
🎓 The average R score across a full CEGEP record sits around 25 out of a possible 50
📩 McGill uses your overall R score across all courses, not a program-specific R score
Why Quebec Uses the R Score
CEGEPs grade differently from each other. An 85% in one college's chemistry class does not mean the same thing as an 85% in another college's chemistry class, because grading standards, class strength, and course difficulty vary. Quebec universities adopted a shared correction method in 1995, called the cote de rendement au collégial or R score, to compare applicants on a common scale regardless of which CEGEP they attended, according to the Bureau de coopération interuniversitaire (BCI) .
The Formula
The BCI publishes the R score formula as:
R score = ((Zcol x IDGZ) + ISGZ + 5) x 5
Zcol, your college Z score, measures where your grade sits within your specific class, based on the class average and how spread out the grades were.
ISGZ, the indicator of the strength of the group, reflects how strong your classmates were in high school, based on their Secondary 4 and 5 ministry exam results.
IDGZ, the indicator of the dispersion of the group, reflects how spread out your classmates' high school results were.
The constants keep the result positive and roughly between 0 and 50. A complete CEGEP academic record averages an R score of about 25.
Why the Same Grade Produces Different Scores
Your Z score alone would unfairly reward students who land in a weak class, since it is easier to rank near the top of a weak group. The ISGZ and IDGZ corrections offset that: a strong grade in a strong, tightly clustered group of classmates gets weighted differently than the same grade in a weaker or more spread out group. The BCI states the two corrections balance out so that, on average, no CEGEP gives its students a systematic R score advantage over another, even though individual course-by-course results still vary with the group you were graded alongside.
Your own Secondary 4 and 5 grades barely move your own R score directly. They only feed into your group's average (ISGZ), so in a class of 35 students your high school record accounts for no more than about 3% of that calculation. Picking a CEGEP because it has a reputation for strong students does not inflate your R score the way it might have before this correction existed.
How Failed Courses Count
Failed courses still enter your average R score, but at reduced weight. For your first CEGEP term, a failed course counts for only 25% of its normal credit weight. From your second term onward, failures count for 50% of their credit weight. This has applied to admissions since Winter 2005.
Program R Score vs Overall R Score
Universities evaluate you two ways: your overall R score across every course on your record, or your program R score, the weighted average for the specific DEC program tied to your last registration, calculated only if at least 16 courses from that program contribute. If you completed more than one DEC, the university uses whichever program average is higher. McGill University is a notable exception, it evaluates candidates on their overall R score rather than a program-specific one.
Adjustments for Specific Cases
Two standing adjustments exist. Quebec universities add 0.5 to the average R score of medicine program candidates who completed Secondary 5 in a region the Ministère de la Santé et des Services sociaux designates as remote, a policy in place since Fall 2003. A separate 0.5 point addition applied to International Baccalaureate and DEC Sciences, Lettres et Arts graduates registering before Fall 2014, but that bonus no longer applies to students who registered from Fall 2014 onward, since a revised formula introduced in Fall 2017 already accounts for the difference.
The 2017 Formula Update
Before Fall 2017, the R score used only the ISGZ correction. Starting with the Fall 2017 term, colleges added the IDGZ dispersion correction as well, and applied the change retroactively to courses taken between Fall 2014 and Summer 2017. The retroactive change never lowered a course R score you had already earned under the old formula. It only applied where the new formula produced a higher result.
Students whose R scores were calculated entirely under the revised formula first entered university in Fall 2018. Because thresholds shift with formula changes, the score that was competitive for a program in one year is not a guarantee for the same program the next year.
Finding Your Own R Score
SRAM, SRACQ, SRASL and university application portals do not show your R score directly. To find it, contact your CEGEP's registrar or the university where you applied, according to the BCI's access to information policy .
What This Means for You
You do not control your classmates' strength. You do control your own grade within your class. Focus on ranking as high as possible within your own courses rather than trying to guess which CEGEP or class group will produce a better score. The correction factors exist specifically to remove that advantage.