The case study PejaSko Cheese Ltd. was developed to facilitate the EU-REPARIS Audit Training of Trainers workshops and simulates a small audit client. The case study is the core teaching resource during the EU-REPARIS Audit Training of Trainers workshops and provides an opportunity to bridge the gap between theory and the practical application of International Standards on Auditing (ISAs) while also assisting to develop soft skills such as communication, working as a team and problem solving. It is structured into three volumes that should be used simultaneously: (i) Volume I – Audit Simulation (summary of the PejaSko Cheese scenario); Volume II – Documentation Templates and Examples and Volume III – Trainers Guide.