Operations and Supply Chain Management (OSCM) courses may cover supply chain strategies, supply chain classification, and supply chain performance. Familiarity with various manufacturing and logistics firms would help students to better understand such topics. Information on the Dow Jones Industrial Average indexed firms and top 50 supply chain firms by Gartner is easily accessible and typically covers a variety of industries from chemical, food/beverage, high-tech to retail, to name a few. Instructors of OSCM courses can take advantage of this kind of information to discuss industry characteristics and supply chain classification. We present how to collect financial data, calculate supply chain metrics (e.g., inventory turns, profit margin, and cash-to-cash cycle) by building a spreadsheet model and creating an earns-turns matrix, which prescribes supply chain classification. We also show how to analyze supply chain performance and describe industry characteristics based on the earns-turns matrix. We provide vital questions and takeaways for instructors to lead and wrap-up discussions. Students claim that they appreciated learning about industry characteristics and different supply chain strategies through the earns-turns matrix analysis.