The article describes a project that employs problem-based learning (PBL) to teach the Lean Six Sigma (LSS) methodology as part of an undergraduate or graduate business course. It is scalable to a variety of course delivery and schedule formats, and uses data sets that can create distinct problem-solving scenarios for up to 16 student teams. It exploits available internet resources for supplemental information, thus requiring no physical setup or experimentation, and eliminating material costs. The project provides a complex business problem in a familiar setting, allowing students to focus their learning efforts on technical mastery of concepts and tools rather than underlying business descriptions. It emphasizes critical thinking, team work, and project management, in addition to the fundamental concepts and supporting tools of the process improvement method.