James Kierstead with Michael JohnstonForeword by Prof Douglas Elliffe
Grade inflation in the United States:
From 1940 to 2012, the percentage of grades that were A’s went from 15% to 45%.
C’s went from 35% to less than 15%.

GradeInflation.com
Grade Inflation at American Colleges and Universities
More from Steve McGuire.
Booked, but can’t read (Madison): functional literacy, National citizenship and the new face of Dred Scott in the age of mass incarceration.
When A Stands for Average: Students at the UW-Madison School of Education Receive Sky-High Grades. How Smart is That?