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.

The U.S. Alpha Iota Team chosen for the 48th International Chemistry Olympiad.

L-R: back row: K. Tang, S. Liu, A. Liu; midddle row: Z. Pan, H. Wang; front: J. Tian
Kelli Slunt

The U.S. National Chemistry Olympiad is proud to announce the finalists who will represent the U.S. at the 48th International Chemistry Olympiad in Tbilisi, Georgia, July 23 - August 1.

The members of the U.S. Team Alpha Iota are:
Alex Liu
of The Village School, TX, Greater Houston Local Section;
Zilu Pan
of Canyon Crest Academy, CA, San Diego Local Section;
Kevin Tang
of Solon High School, OH, Cleveland Local Section;
Joyce Tian
of Thomas Jefferson High School for Science and Technology, VA, Chemical Society of Washington.
1st alternate: Steven Liu
, Monta Vista High School, CA, Santa Clara Valley Local Section;
2nd alternate: Harrison Wang
, Hinsdale Central High School, IL, Chicago Local Section

The Team U.S. will travel to Georgia accompanied by mentors: Dr. Kelli Slunt, University of Mary Washington, VA, Head Mentor; Dr. Patrick Chan, Benjamin N. Cardozo High School, NY, High School Mentor; and Dr. Christine Saber, Gannon University, PA, College Mentor.

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