Rethinking Teacher Education and Teacher Development-this themed issue of the Caribbean Journal of Education has its genesis in research evidence that confirms the impact of teacher quality on students' learning. Some researchers have even argued that it is the determining factor. Given its importance, we are impelled to attend to factors that influence teacher quality, such as teacher professionalism, accountability, and standards. Moreover, as we aim as a global community to achieve the Millennium Development Goal 2 achievement of universal primary education-and to address global sustainability, we need to examine more closely what we mean by teacher quality, as well as who and what make for effective teaching and learning. This special issue of the Caribbean Journal of Education devoted to the theme of rethinking teacher education and teacher development is therefore, timely.