This research uses the psychological construct of "possible selves" to investigate the aspirations of 25 students in Year 11. "Possible selves" provide a conceptual link between self-concept and motivation. The study compared the positive, negative and impossible possible selves of Pupil Referral Unit (PRU) attendees with participants from a secondary school. Whereas 100% of the school students generated positive possible selves, only 69% of the PRU participants did so. The school students were more able to provide sub-goal strategies to achieve positive possible selves and could articulate alternatives if their first aspiration eluded them. PRU participants generated divergent impossible selves. The findings suggest that in comparison with those in school, PRU attendees have fragile positive selves and more negative perceptions of their prospects. This may indicate a lack of internalisation of positive future options. There are implications for practice as those who work in the PRU context aim to provide meaningful experiences. (Contains 6 tables.)