ETS released a report on test taker performance on the GRE® revised General Test between August 1, 2011 and June 30, 2012. The report discloses scores by gender and ethnic group, intended graduate major field, and test-taker group within major fields.
ETS is careful to note that:
To the extent that there are differences in test scores both within and across the groups under analysis, the differences can result from factors such as variation in course-taking patterns, interests, knowledge, and skills, or differential educational, economic, and social systems in which everyone does not receive equal opportunity.
There were a couple of interesting observations such as the two most desired geographic regions for graduate study were the South and West Coast and natural sciences was the most popular graduate field.