Complex Instruction (CI) is a cooperative learning approach, which aims at improving the equal status interaction among students working in groups who may be at different academic and social levels. Based on an ethnographic research, the article examines how a group of Italian primary school teachers understand the status problem and how the finding from this research demonstrates a change in their expectations of competence through using CI. This research analyses to what extent these teachers meet the original goal of achieving greater equity, as well as discussing implications for teachers' professional development.