Teaching is the number one in-school factor affecting student outcomes. And a central part of the strategy for improving teaching involves better teacher preparation. There is a great need for more relevant and innovative teacher preparation programs, and Education Evolving believes creating a new program--potentially within a non-conventional institutional host--is the best way to keep the program truly independent and innovative. Possible non-conventional hosts include out-of-school programs, museums, teachers unions, school-university partnerships, and other entities that are passionate about student learning. Such a program could be open to prospective teachers entering at multiple points in their education pathways and careers. This report highlights essential elements and best practices for this new teacher preparation program. It begins by exploring which skills teachers in 21st century schools will need as their roles change to fit the needs of their students and society. The report then describes some of the most basic elements or best practices that should be included in a program and proposes a sequence and flow to the various portions of the program. And finally, it considers what types of organizations might be best suited to house this new program. [This proposal was written in collaboration with Lars Johnson and Eura Chang.]