May 23, 2011Posted by Jay LivingstonWould conservative students prefer greater inequality in grades? That was the question I asked in a
recent post. I was responding to a stunt by the Merced Republicans that asked A-students if they would be willing to give some of their GPA points to lower-GPA students in order to reduce inequality. The Republicans opposed such redistribution, so I wondered just how deep and solid was their preference for inequality. Would they favor a return to the less equal grade distributions of the 1940s, with far fewer As and more Cs and Ds?
My proposal was far more realistic. Students cannot transfer their GPA points, but professors can change their grading scales. And, at least in one study, Republican professors create grade distributions with greater inequality than those of their Democratic colleagues. Here’s a graph from a forthcoming
article by Talia Bar and Asaf Zussman.
(Click on the graph for a larger view.)
Students with high SATs get higher grades than do low-SAT students (despite all the criticisms of the SAT, it is still a good predictor of college performance). But those high-SAT students are more likely to get the highest marks in courses taught by Republicans. Students with low SAT scores get better grades from Democrats than they do from Republicans.
Relative to their Democratic colleagues, Republican professors tend to assign more very low and very high grades: the share of the lowest grades (F, D-, D, D+, and C-) out of the total is 6.2 percent in courses taught by Republican professors and only 4.0 percent in courses taught by Democratic professors; the share of the highest grade (A+) out the total is 8.0 percent in courses taught by Republican professors and only 3.5 percent in courses taught by Democratic professors.
The students were undergraduates in the College of Arts and Sciences at “an elite university.” The paper has been mentioned at The Monkey Cage and at a WSJ blog.