This paper describes the design and use of a Web-based instructional design (ID) case in a team case competition involving six universities. It provides background information on case methods and techniques used to help students learn about instructional design practice. Teams participating in the 1996 competition were from: Arizona State University, Pennsylvania State University, and the Universities of Colorado-Denver, Minnesota, Southern Alabama, and Virginia. A total of 36 students participated. The case competition is described and the event methods detailed. Cases are an important instructional tool for developing professional knowledge across disciplines. When instructional design (ID) training includes applied design projects and reflection on relevant theories and techniques, the use of cases can ensure a more comprehensive preparation, as a greater number of design issues are explored and are contained in a broader array of environments than would otherwise be encountered. Use of the World Wide Web as the delivery medium of ID cases enables use of the materials by students at any institution or by interested individuals. Evaluative data is presented, based on a follow-up survey of participants and event officials. Observations about the potential value of case methods and case events, and recommendations for future development are provided. Team collaboration and competition are noted as motivating factors for students. (Contains 14 references.) (Author/SWC)