This paper is a research study of an interdisciplinary and exploratory kind drawing on a case study undertaken in elementary classrooms in socio-economically disadvantaged areas of Santiago de Chile. Having combined Linguistics for Education Studies and Corpus Linguistics approaches, the analysis of pragmalinguistic choices (i.e. personal pronouns, other lexical choices marking in-group relations) used in the introductory parts in a corpus of 50 lessons recorded in an elementary school setting there comes to be a key strategy for teachers' and learners' (...) involvement in classroom interaction The pragmalinguistic strategies evidenced in teachers' and learners' output have come to confirm the role of communicative strategies to promote participants' engagement in the teaching/learning process. In other words, teachers create an in-group relation, a solid sense of belonging and empathy among the participants in the teaching-learning context from the opening communicative stances in use to overcome less advantaged home and community cultural settings. The research findings also point to further studies to devise pedagogic tools addressing the specific contexts under scrutiny. Thus, a Teacher-Learner rapport is conveyed primarily through teachers' language choice, which is seen as the main force for learners' engagement in disadvantaged settings. (shrink)