Modern language education favours the model of a reflective teacher-researcher who is engaged in both individual and collaborative curriculum revision and teaching-learning environment improvement. The present paper addresses the issue of classroom research and reflective practice in current ESL pedagogy and teacher professional development. The theoretical introduction is followed by research findings recently gathered from Sri Lankan ESL teachers. The study aimed at ascertaining the extent to which Sri Lankan ESL teachers are involved in classroom research and discussing various reasons why they assume or do not assume the role of a teacher-researcher. The study reports interesting findings, calling for a wide-ranging discussion on reflective inquiry in the language classroom as theory and practice seem to be marching to a different tune.