Olympiad Olympiads for the summer and winter games, and such usage particularly for the Winter Olympics is not consistent with the numbering discussed above. The U.S. Olympic Committee often uses the term "quadrennium", which it claims refers to the same four-year period. However, it indicates these quadrennia in calendar years, starting with the first year after the Summer Olympics and ending with the year the next Olympics are held. This would suggest a more precise period of four years, but the 2001–2004 Quadrennium would then not be exactly the same period as the XXVIIth Olympiad. A "Cultural Olympiad" is a concept
Science Olympiad for following years than pilot events. Almost all of the Trial events from recent National tournaments have become official events within a few years of the tournament, while the same is not true for almost any of the pilot events. Teams are hosted by the school from which the participants attend. Science Olympiad is most often run as an after-school extracurricular activity, but some schools offer Science Olympiad classes that allow students to receive academic credit for participation. A teacher, parent, or student (usually a volunteer) coordinates the team in practice and preparation for the competition. Often there are others