“The most common grade is my class is a C.” That’s what teachers told my classes year after year. Yet somehow, half of the students were getting A’s. I must have taken classes with exceptionally smart students. Or, the average grade really wasn’t a C.
According to the analysis of Stuart Rojstaczer and Christopher Healy, published in the Teachers College Record, A’s represent 43% of all letter grades. It hasn’t always been that way. 50 years ago, only 15% of grades were A’s and the most common grade really was a C. In 1960, approximately 35% of grades were C’s, 32% were B’s, 16% were A’s, 11% were D’s and 6% were F’s. Grade inflation spiked in the 60′s, slowed down – and even reversed slightly – in the 70′s and early 80′s, and then began a gradual increase that’s still climbing 25 years later.
Chart from New York Times (free registration required)
In the 60′s, there was a traditional bell curve around a C grade. In the 80′s there was part of a bell curve around a B grade. As of 2007, there was half a hill. There’s no longer a bell curve. The chart below shows these curves and shows that although the inflation is happening at both public and private schools, it’s happening at private schools faster.
Chart from New York Times (free registration required)
According to Rojstaczer and Healy, one of the concerns is that,
When college students perceive that the average grade in a class will be an A, they do not try to excel… It is likely that the decline in student study hours, student engagement, and literacy are partly the result of diminished academic expectations.
Straight A’s are now much less impressive.
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