Everyone knows and research shows that teachers are the key--the single most influential school-based factor--to whether students achieve. But this may be the only point of agreement in the battles over how to improve teaching. In a commentary that appeared in the May 20 edition of Education Week, Barnett Berry speaks to these divisions but looks beyond them with a vision of teaching's future. His "third way" invites educators into a profession poised to give every student a well-prepared and effective teacher.