‘Grade inflation’ gives students false sense of their academic abilities

Suppose you’re scheduled for major heart surgery. Shortly before your surgery begins, you check into your surgeon’s background and are pleased to discover your surgeon had a 100 per cent average throughout medical school. But then you learn that every student at the same medical school received 100 per cent in their courses, too. Now you probably don’t feel quite as confident in your surgeon.

This is the ugly reality of “grade inflation” where the achievements of everyone, including the most outstanding students, are thrown into question. Fortunately, grade inflation is (currently) rare in medical schools. But in high schools, it’s a growing problem.

In fact, grade inflation is so prevalent in Ontario high schools that the University of Waterloo’s undergraduate engineering program uses an adjustment factor when evaluating student applications—for example, Waterloo might consider a 95 per cent average from one school the equivalent of an 85 per cent average from another school.

Grade inflation is a problem in other provinces as well. The average entrance grade at the University of British Columbia is now 87 per cent, up from 70 per cent only 20 years ago. While this is partly because the supply of available university spots has not kept pace with growing demand, it’s also likely that some B.C. high schools are inflating their students’ grades.

Sadly, grade inflation is so rampant these days that some school administrators don’t even try to hide it. For example, earlier this year all students at St. Maximilian Kolbe Catholic High School in Aurora, Ontario, received perfect marks on their midterm exams in two biology courses and one business course—not because these students had mastered these subjects but because the York Catholic District School Board had been unable to find a permanent teacher at this school.

The fact that a school board would use grade inflation to compensate for inadequate instruction in high school tells us everything we need to know about the abysmal academic standards in many schools across Canada.

And make no mistake, student academic performance is declining. According to results from the Programme for International Assessment (PISA), math scores across Canada declined from 532 points in 2003 to 497 points in 2022 (PISA equates 20 points to one grade level). In other words, Canadian students are nearly two years behind on their math skills then they were 20 years ago. While their high school marks are going up, their actual performance is going down.

And that’s the rub—far from correcting a problem, grade inflation makes the problem much worse. Students with inflated grades get a false sense of their academic abilities—then experience a rude shock when they discover they aren’t prepared for post-secondary education. (According to research by economists Ross Finnie and Felice Martinello, students with the highest high school averages usually experience the largest drop in grades in university). Consequently, many end up dropping out.

Grade inflation even hurts students who go on to be academically successful because they suffer the indignity of having their legitimate achievements thrown into doubt by the inflated grades of other students. If we want marks to have meaning, we must end the practise of grade inflation. We do our students no favours when we give them marks they don’t really deserve.

Just as our confidence in a surgeon would go down if we found out that every student from the same medical school had a 100 per cent average, so we should also question the value of diplomas from high schools where grade inflation is rampant.