Case-Based Learning in HR: 3 Industries, 3 Cases, 3 Lessons You can teach the turnover formula in ten minutes. Teaching a student what to do about it takes a case. Most HR courses handle the models well — the competency matrix, the four Kirkpatrick levels, the turnover ratio. What's harder to teach is judgment: the moment a manager has one budget, three plausible options, and no answer key. That's the gap case-based learning is built for. Instead of "here is the framework," i