The aim of the present study is to explore the views of migrant and non migrant students living in Greece on cultural diversity in the classroom. It focuses on students of both the dominant (i.e. Greek) and nondominant (i.e. migrant) groups and investigates their views in comparison to one another. Data were collected in the context of a pilot action research program aiming at the empowerment of in-service teachers so that they actively support the migrant students' integration into the regular classroom. Two hundred and seventy students participated in the study. Data were selected through three scales especially constructed for the purposes of the present study which explored (a) migrant and non migrant students' views on cultural diversity in the classroom, (b) their expectations from the implementation of the above mentioned program, and (c) the reasons they consider important their participation in it. The results reveal the contradictions and the conflicting views of older students of the non migrant group and point to the necessity for intervention programs that will take into consideration not only the educational needs of students of diverse cultural backgrounds but also the psychological needs of "all" students of both the dominant and the nondominant groups.