High GPAs Have Little Use As Student Motivator or Evaluation Tool for Grad Schools and Employers

Stuart Rojstaczer is a retired Duke University professor who has tirelessly crusaded for several decades against "grade inflation" at U.S. universities and maintains a website with lots of historical GPA data and charts (GradeInflation.com).  The chart above illustrates grade inflation at the University of Michigan-Ann Arbor over roughly the last half century (data here), with the average GPA rising from 2.57 in 1951 (C+/B-) to 3.27 by 2008 (B+).  The grade inflation at Michigan is similar to the national trend at most American universities over time.  

Catherine Rampell at the NY Times Economix Blog writes about a new paper by Professor Rojstaczer and co-author Christopher Healy titled "Where A Is Ordinary: The Evolution of American College and University Grading, 1940–2009," published in the Teachers College Record.  The main findings of the paper appear below, illustrated by this chart: 

"Across a wide range of schools, As represent 43% of all letter grades, an increase of 28 percentage points since 1960 and 12 percentage points since 1988. Ds and Fs total typically less than 10% of all letter grades. Private colleges and universities give, on average, significantly more As and Bs combined than public institutions with equal student selectivity. Southern schools grade more harshly than those in other regions, and science and engineering-focused schools grade more stringently than those emphasizing the liberal arts. It is likely that at many selective and highly selective schools, undergraduate GPAs are now so saturated at the high end that they have little use as a motivator of students and as an evaluation tool for graduate and professional schools and employers."

MP: It's the college version of the "Lake Wobegon effect" and "illusory superiority."