A few points
1) Looking at figure 2 in the actual study, if you compare "private liberal arts" to "public flagship" don't the results contridict the author's main point? The graph says that based SAT scores, public schools give students higher GPAs than the authors formula predicts, while private schools only barely do. Am I mis-interpreting this?
2) Doesn't this sound like total BS, or at the very least, a gross generalization:
"The authors suggest that these laxer grading standards may help explain why private school students are over-represented in top medical, business and law schools and certain Ph.D. programs: Admissions officers are fooled by private school students' especially inflated grades."
3) The article says science departments give lower GPAs by 0.4 points compared to humanities departments. Finally, evidence to back up b****ing about harder classes. lol
This study seems questionable, especially the author's "explanations".