The mission of the Knowles Science Teaching Foundation (KSTF), to increase the quantity of high quality high school science and mathematics teachers in United States High Schools, calls for a deeper understanding of what it takes to prepare and support successful teachers. On September 21, 2006, KSTF convened a group of 41 individuals with a broad range of perspectives and expertise to address three essential questions with regard to secondary science teacher preparation: What do we know, what do we need to find out, and what research will help us fill in the gaps? Participants were...