This teaching note is intended as a guide for classroom use of the case, “U.S. Dairy Industry Supply Control: Managing the Cooperatives Working Together Program.” Some of the teaching objectives of this case are to: (1) evaluate the benefits from an industry supply control effort; (2) understand the problems and causes of oversupply in a commodity industry; and (3) learn about price equilibrium. Teachers using this note can present a dynamic analysis using the cobweb theorem. Also, teachers can compare and contrast the welfare impact of funding supply control versus the welfare impact of funding commodity promotion.