One of the competitive priorities of the U.S. Department of Education's Race to the Top applications addressed science, technology, engineering, and mathematics (STEM). States that applied were required to submit plans that addressed rigorous courses of study, cooperative partnerships to prepare and assist teachers in STEM content, and prepare more students, particularly underrepresented groups, for STEM study and careers. This analysis summarizes the proposed STEM activities in twelve awarded Race to the Top applications. The summary is organized into the following sub-sections of the competitive priority: (1) approaches to rigorous courses of study; (2) collaborative approaches to preparing and assisting teachers and applied learning opportunities; and (3) approaches to preparing more students and addressing the needs of under-represented groups. An additional section, not required in the application, is presented on statewide initiatives and/or networks. (Contains 4 tables.)