Grades awarded to U.S. undergraduates have risen substantially in the last few decades, particularly at selective and private colleges, a new analysis has found. From the study conducted by Stuart Rojstaczer and Christopher Healy: Records of average grades show that since the 1960s, grading has evolved in an ad hoc way into identifiable patterns at the national level. Relative to other schools, public-commuter and engineering schools grade harshly. These trends may help explain why private school students are disproportionately represented in Ph.D. study in science and engineering and why they tend to dominate admission into the most prestigious professional schools.
