FIGURE 6-1 Fraction of graduate students supported (above) by federal programs (primarily for research assistantships) and (below) by their academic institutions (primarily for teaching assistantships). In 2007, Graduate Student Support (GSS)-eligible fields were reclassified, newly eligible fields were added, and the survey was redesigned to improve coverage and coding of GSS-eligible units. “2007 new” presents data as collected in 2007; “2007 old” reflects data as they would have been collected under 2006 methodology. SOURCE: National Science Foundation/ National Center for Science and Engineering Statistics, 2009, NSF-NIH Survey of Graduate Students and Postdoctorates in Science and Engineering, Table 38. Available at http://www.nsf.gov/statistics/nsf12300/content.cfm?pub_id=4118&id=2.