U.S. National Chemistry Olympiad

Chemistry Olympiad

The U.S. National Chemistry Olympiad is a multi-tiered chemistry competition. The top four students of the national competition represent the United States in the annual International Chemistry Olympiad.

USA Team wins 4 gold medals at the 50th International Chemistry Olympiad.  

L to R: Andrew Wu, Yutong Dai, Michelle Lu, and Andrew Shi.
C. Hernandez.

U.S. National Chemistry Olympiad program proudly announces the extraordinary performance of the Alpha Lambda Team at the 50th International Chemistry Olympiad competition, which concluded July 29, 2018, in Prague, Czech Republic.

Jeffrey Shi of Marcellus High School, NY won the fourth highest-ranking gold medal; Michelle Lu of Pomperaug High School, CT, Andrew Wu from Park Tudor School, IN and Yutong Dai of Princeton International School, NYalso earned gold medals placing 10th, 12th and 13th respectively.

The USA Team competed against 296 students from 76 countries.

Congratulations Team USA for this great achievement!

Read the C&EN article about the USA Team at IChO.  

How to Participate in the U.S. National Chemistry Olympiad

The U.S. National Chemistry Olympiad (USNCO) program is a chemistry competition for high school students. The purpose of the competition is to stimulate young people to achieve excellence in chemistry. The American Chemical Society has sponsored the program since 1984. 


Local Chemistry Olympiad Competition

The local competition is open to all high school students. ACS Local Sections choose nominees for the national exam. Students can review past Local Exams to study for their local competition.


National Chemistry Olympiad Exam

The national exam involves three parts administered to more than 1,000 students. Students can use past National Exams to prepare. The 20 top-scoring students are chosen to attend a study camp where students are selected for the International competition.


Study Camp

The 20 top scoring students from the National Exam spend two weeks at a study camp to undergo rigorous training. Based on their performance, four students are chosen to represent the U.S. at the International Chemistry Olympiad.


  • Students must be U.S. citizens or legal, permanent residents of the United States (green card holders) to take the U.S. national examination.
  • High school students who will graduate no earlier than Spring of the year that they participate in the competition are eligible.
  • Students must be under the 20 years of age on the first of July of the year of the competition.

    See Rules and Eligibility