In twenty years of teaching, the author has never been involved in a project that sparked as much enthusiasm from students, parents, the administration, and other teachers as the Entrepreneur Fair. In an effort to challenge students to become entrepreneurs, the author developed a one-day market called the Entrepreneur Fair at Stonewall Elementary School in Lexington, Kentucky. This one-day event is the culminating activity following a six-to-eight week preparation and study of economic and entrepreneurial concepts. Small companies account for 99.7 percent of employer-owned firms and create 60 to 80 percent of the new jobs in recent years in the United States, and yet entrepreneurship is rarely taught as a viable career option in schools across the country. Thus entrepreneurship programs, such as the Entrepreneur Fair, reflect an important aspect of the real world, as well as meeting many state social studies standards and national standards. Aside from real world connections, the Entrepreneur Fair promotes collaboration between teachers of all levels. This article describes the what, why, and how of implementing an Entrepreneur Fair with upper elementary or intermediate-level students. Handouts of the Entrepreneur Fair on business proposal and reflection and assessments are presented. (Contains 4 notes.)