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Science | STEM

U.S. National Chemistry Olympiad

  • Last Updated: March 14, 2025

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Contact Info

  • Phone: Currently Unavailable
  • Contact: usnco@acs.org
  • Website
  • American Chemical Society (ACS)
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About the competition

The U.S. National Chemistry Olympiad (USNCO) identifies and encourages high school students with a talent for chemistry. It selects the top students to represent the U.S. at the International Chemistry Olympiad (IChO).

Comp Info

  • Estimated Ann. Participants: 16000
  • Cost: Free
  • Estimated Time Commitment: Significant
  • Participant Format: Individual
  • Event Format: Hybrid
  • Competition Format: Exam
  • Reach: National
  • Event Size: Medium

Participation Information

Schools nominate students to participate in local exams. High scorers advance to regional and national rounds, and the top 20 students are invited to a study camp. The top 4 represent the U.S. at the IChO.
Open to high school students in the U.S.
Certificates, medals, and recognition for excellence in chemistry
Schools nominate students to participate in local exams. High scorers advance to regional and national rounds, and the top 20 students are invited to a study camp. The top 4 represent the U.S. at the IChO.
1. Participate in local exams. 2. Top students advance to the national exam and study camp. 3. The top 4 students represent the U.S. in the IChO.
Chemistry textbooks, study guides, ACS materials
Based on problem-solving skills, depth of chemistry knowledge, and performance in local, regional, and national exams.

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