A paper to be published by the American Economic Journal: Applied Economics has found that democratic professors are more egalitarian in their grading than Republican ones. The paper notes that:

“[T]he 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. Both differences are highly statistically significant.”

Source: The New York Times

Via: Freakonomics Blog