The U.S. team made history at the 49th International Chemistry Olympiad (IChO) in Nakhon Pathom, Thailand, which will conclude on July 15.

Winning four gold medals, the students turned out the best performance in the history of the U.S. team since it began participating in the high school chemistry competition in 1984. In 1999, the U.S. team won three gold medals, along with the top scoring gold medal. That competition also took place in Thailand.