In a recent study published in the journal Labour Economics, University of Miami professors Michael French, Philip Robins, Jenny Homer and Lauren Tapsell showed that high school students' grades may not be completely merit-based.

"What was found in the labor market [is that] those who are more attractive than average made wage premium and those below average made wage penalty, and we wanted to see if that relationship held up in grades for high school students," French said in an interview.

The researchers found what they expected, as French and his colleagues discovered that female students who have good personalities tend to have higher GPAs, as do male students who are well groomed.

Twenty thousand different seventh to 12th graders were surveyed in the course of the study.

Source: The Tufts Daily
http://www.tuftsdaily.com/flash-a-smile-score-an-a-study-links-gpa-to-attractiveness-1.1868904