At Boulder Insight, we recognize the stark contrast between learning Tableau with training data and applying it to real-world datasets. We've observed that students grasp Tableau more effectively when transitioning from training data to their organization's messy datasets. Our most successful clients benefit from coaching sessions using their own projects and data, or from custom curricula tailored to simulate their company's data environment. While training data offers a structured learning experience, true mastery comes from applying lessons to real-world scenarios, empowering individuals to make informed decisions using familiar data. Our goal is not just to teach Tableau but to coach individuals in leveraging their data effectively, even beyond the classroom.