The preparation of science, technology, engineering, and mathematics (STEM) teachers is a major focal point for the President and his Administration. In the absence of well-educated teachers at the K-12 level, there will be long-term consequences for economic growth, global competitiveness, and the general well-being of American society. This talk will examine the data that pertain to our current shortage of STEM teachers, how states certify mathematics teachers, the role of college and university mathematics departments in the preparation of teachers, and the challenge of tailoring an effective approach to career-long professional development.