From NPR's transcript of a Morning Edition story:
Group of researchers ran this interesting field experiment. They emailed more than 6,500 professors at the top 250 schools pretending to be the students. And they wrote letters saying, I really admire your work. Would you have some time to meet? The letters to the faculty were all identical, but the names of the students were all different. [...] Brad Anderson. Meredith Roberts. Lamar Washington. LaToya Brown. Juanita Martinez. Deepak Patel, Sonali Desai, Chang Wong, Mei Chen. [...]
All they were measuring was how often professors wrote back agreeing to meet with the students. And what they found was there were very large disparities. Women and minorities [were] systematically less likely to get responses from the professors and also less likely to get positive responses from the professors. Now remember, these are top faculty at the top schools in the United States and the letters were all impeccably written.
Two more kickers: "There's absolutely no benefit seen when women reach out to female faculty, nor do we see benefits from black students reaching out to black faculty or Hispanic students reaching out to Hispanic faculty," and, "In business academia, we see a 25 percentage point gap in the response rate to Caucasian males vs. women and minorities." Word, this sounds great, we're doing great. [NPR]