Until recently, there has been no credible, reliable source for instructional cost data on a national basis for two-year colleges in the United States. To fill this need, the Kansas Study of Community College Instructional Costs and Productivity was designed and implemented as a national data collection and reporting consortium. Based on the four-year college and university Delaware Study of Instructional Costs and Productivity, the Kansas Study collects and reports community college instructional costs and faculty workload at the academic discipline level of analysis. This article analyzes aggregate national data from the Kansas Study to determine the major instructional cost drivers for community colleges nationwide.