What does it actually take to measure whether a tourism project is making a difference for the SDGs? That was the central question behind two masterclass sessions held at Lucerne University of Applied Sciences and Arts (HSLU), delivered in the framework of the Bachelor of Science in International Sustainable Tourism, a joint initiative with UN Tourism. The first session introduced students to TIPs (Toolkit of Indicators for Projects), a framework developed jointly by UN Tourism and the Japan International Cooperation Agency (JICA) to help measure the impact of tourism development projects against the SDGs. Rather than replacing existing measurement systems, TIPs fills a practical gap: giving project teams concrete, tourism-specific indicators across project phases, from planning to closing. The second session put that knowledge to work. Through a group exercise built around a fictional rural tourism project, students applied TIPs across different project phases, identifying relevant SDG targets, defining themes, and considering what data to collect and how to use it. For students training to work in sustainable tourism, understanding how to measure impact is as essential as designing the project itself.