Individuals in the STEM workforce make important contributions to improving a nation’s living standards, economic growth, and global competitiveness. They fuel a nation’s innovative capacity through their work in research and development (R&D) and in other technologically advanced activities, collectively referred to as the science and engineering (S&E) enterprise. The goal of this report is to provide information about the STEM workforce that enables insight into how the U.S. S&E enterprise is positioned to meet the needs of and compete in an increasingly technologically advanced economy, both nationally and internationally.