Although Finnish basic education is based on inclusion, 37% of students receiving special support still study in either separate schools or separate classes in comprehensive schools. In this study we explore how policies of inclusion are implemented in a school with separated special educational needs (SEN) and general education (GE) classes. More specifically we conducted a two-year ethnographic study focusing particularly on exclusion and the sense of belonging in a lower secondary school (students aged 13-16) in the capital region of Finland. During the fieldwork, several students attending the SEN-class expressed an interest in changing from the SEN-class to a GE-class, or in breaking the borders between SEN and GE classes in other ways. As part of the negotiations with the school, students who criticised the GE- and SEN-class division were offered an opportunity to transfer to GE-classes but in the end, all of them wanted to stay in the SEN-class. In this investigation, we focus on the students' reasoning and the teachers' reactions when students negotiate the borders between SEN and GE-classes. In this study we found a clash between integration and inclusive thinking.