In the United States, FFA competitions are judging contests (otherwise known as Career Development Events) organized by the U.S. National FFA Organization, in which High School students compete based on their knowledge of a particular subject, usually for their school teams. The contests are organized by FFA advisors and local experts. The competitions determine which team and individuals have the best aptitude for evaluating a particular animal or item as compared to an "official". The official placings and answers are set by an expert in the discipline. Officials are often from agricultural universities or USDA employees.