Focusing on one of the most studied dimensions of Social Psychology, i.e., intergroup relations, this study analyzes its discursive accomplishment in a specific group-based intervention, i.e., the talk and work of an Italian group home, i.e., a small alternative care facility hosting a group of out-of-home children. Particularly, we focused on the fictionally called “Nuns’ Home,” a group home previously investigated for its ethnocentric bias, and its intergroup relations with “inside” and “outside” groups, such as schools, biological families, and social (...) services. By combining a qualitative and quantitative approach in analyzing one audio-recorded ethnographic interview with the whole team of professionals, we aimed at accounting for the multitude of internal and external stakeholders that participants refer to, analyzing the discursive accomplishment of ingroup and outgroup in talk-in-interaction and investigating ingroup bias and group qualification. To do so, we detected social categorization markers and qualifying devices that participants rely on when referring to groups. Results show that, among the numerous groups recognized, participants co-construct intergroup relations and ingroup bias implying negative assessment over external groups. Being different from traditional laboratory studies illustrating substantial contraposition between ingroup and outgroup, our qualitative analysis reveals the multitude of groups by which the ingroup is formed and their internal fragmentation. To conclude, we discussed the implications of qualitatively studying intergroup relations in group homes and indicated future lines of research. (shrink)