Research suggests motivational interviewing (MI) techniques can be useful in educational settings for improving motivation in disaffected pupils. This exploratory mixed methods study sought to investigate whether implementing an MI-based pro- gramme through school-based paraprofessionals would be effective in improving pupil motivation. Five pupils identified as disaffected took part in five sessions of a MI-based intervention delivered by paraprofessionals within one high school setting. All of the pupils completed pre- and post-intervention measures of school-based motivation. The paraprofessionals involved in programme delivery took part in pre- intervention training; and post-intervention were given an opportunity to express their views about the usefulness of the programme and practicalities of implementation during a focus group. Results showed that although the paraprofessionals expressed positive views about the effectiveness of the intervention, these observations were not necessarily supported by quantitative outcomes relating to pupils’ self-reported school-based motivation. Implications for the delivery of MI-based interventions as an individual approach for school-based practice are discussed.