There have been some studies using other information. There are some international studies that have looked at how well schoolchildren at 15 years of age are doing in math and science and where they end up later. I can send you some actual examples. For instance, one study found that young men with lower marks in high school were more likely to choose a STEM program than young women with higher marks were. That's actually produced, and I can forward it to the researchers. I think you may be aware of that. There are a few like that that are out.
On March 26th, 2015. See this statement in context.