This paper investigates how students at the State University of Rio de Janeiro(UERJ), one of the first Brazilian universities to adopt race-based quotas foradmissions, interpret racial categories used as eligibility criteria.Considering the perspectives of students is important to understand the workingsof affirmative action policies because UERJ's quotas require applicants toclassify themselves. Students' interpretations of those categories often divergefrom the interpretations intended by people who shaped the policy. Students'perspectives are formed by everyday experiences with categorisation and by theirself-assessment as legitimate beneficiaries of quotas. In contrast, the policieswere designed according to a new racial project, where blackconsciousness-raising and statistics played an important role.