This article presents some thoughts on the reflective teacher as the impulse for the epistemology of practice, in order to support the ongoing training of teachers, as an essential condition for achieving quality of professional practice. This work is based primarily on Dewey (1960), Freire (1997), Schön (2000), Pimenta (2002) and Zapata (2004). The research methodology is based on reports of teaching experience, and on a literature review. It is hoped that the results will demonstrate the importance of the reflective teacher and practice of epistemology in the school context, in view of the contributions to teacher training and a consequent improvement of teaching and learning processes.