The Inside-Out Prison Exchange Program has been delivered at 2 prisons in Victoria, Australia, Dame Phyllis Frost Centre and Marngoneet Correctional Centre, since 2015. Selected university (outside) students and prisoners (inside) engage in a collaborative learning environment, studying Comparative Criminal Justice Systems. Students critique complex criminal justice material and undertake university standard assessments. The programme was evaluated through pre-test and post-test surveys and focus groups. This paper outlines this evaluation, including the similarities and differences between inside and outside students' experience, their knowledge of the criminal justice system, the stereotypes and the values, and challenges of the Inside-Out programme. Student views of the criminal justice system and each other were challenged and changed, often in unexpected ways. The knowledge from this evaluation will contribute to the improvement of Inside-Out processes and outcomes, nationally and internationally.