Following up on a number of high-profile newspaper pieces on the
relative decline of science, technology, engineering, and math
(STEM) students in U.S. universities, Timothy Taylor
explains that grade inflation might have a lot to do with the
mass migration to the humanities and other “soft” subjects.
Basically, students like good grades, and STEM departments have
driven many students away with low average grades. Taylor looks
through the academic research on the subject, and digs up an
estimate that “if the English department adopted the Math
grade distribution, there would be a decline of 47 percent in the
number of students taking one or more courses beyond the
introductory course in English.”
Why has grade inflation affected the STEM subjects less than the
arts and letters? Taylor provides a few reasons, relating to the
role that grades play in shaping the undergraduate population to
the school’s needs:
We took another swing at the issue of grades and course choice
with a couple of articles in our Summer 2009 issue. Alexandra
C. Achen and Paul N. Courant asked “What Are Grades Made
Of?” They argue: “Grades are an element of an
intra-university economy that determines, among other things,
enrollments and the sizes of departments. … Departments generally
would prefer small classes populated by excellent and highly
motivated students. The dean, meanwhile, would like to see
departments supply some target quantity of credit hours-the more
the better, other things equal-and will penalize departments that
don’t do enough teaching. In this framework, grades are one
mechanism that departments can use to influence the number of
students who will take a given class.”
Taylor concludes:
In short, grade inflation in the humanities has been
contributing to college students moving away from science,
technology, engineering, and math fields, as well as economics, for
the last half century. It’s time for the pendulum to start swinging
back. A gentle starting point would be to making the distribution
of grades by institution and by academic department (or for small
departments, perhaps grouping a few departments together) publicly
available, and perhaps even to add this information to student
transcripts.