This study presents a model for researching the integration of the immigrant population in educational contexts based on a multidisciplinary approach. The Linguistic and Cultural Atlas of Immigration (ALCI) is a working tool designed for teachers who must serve students in their classrooms from languages and cultures other than that of instruction. The information the Atlas contains is the product of various research and documentation projects on the demographic variables of the foreign population located in central Spain, the habits and customs of their culture of origin and important aspects of their native, family or heritage language. The ALCI raises awareness of the results of linguistic and cultural research carried out with the collaboration of the immigrant population (students, their families and other participating adults) and teachers, so that they can be leveraged and employed in the classroom.