Newsroom
News & Updates
Season announcements, exam guidance, and Team USA results from the U.S. National Chemistry Olympiad.
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Inside the USNCO Multiple-Choice Paper: A 90-Second-Per-Question Strategy (2026)
Part I of the USNCO National Exam is 60 multiple-choice questions in 90 minutes — about 90 seconds each. A pacing-and-recognition strategy and how to drill it with past papers.
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USNCO vs IChO: How the Two Chemistry Exams Actually Differ (2026)
The USNCO and the IChO are both elite chemistry exams but differ in format, length, scoring and scope. A side-by-side of the national qualifier and international final.
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The USNCO Free-Response Paper: How to Write Solutions That Score (2026)
The USNCO free-response paper rewards method, not just the final number. How to structure worked solutions, earn partial credit, and avoid the errors that cost marks.
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AP Chemistry vs the USNCO: How Far Apart Are They? (2026)
AP Chemistry and the USNCO overlap in syllabus but differ sharply in depth, format and purpose. A side-by-side comparison for students using AP to reach olympiad chemistry.
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From USNCO to the IChO: The Road to the International Chemistry Olympiad (2026)
How the USNCO selects the four-student Team USA that competes at the International Chemistry Olympiad (IChO 2026). What the IChO is, how the four-tier U.S. route feeds it, and how students in China can use the system. Confirm details on acs.org.
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Is the USNCO Worth It? What Team USA Results Signal (2026)
Is the USNCO worth it? Team USA won 4 gold at IChO 2025 Dubai. Here is what High Honors, Honors and an IChO place actually signal academically — and how students in China extract real value from the system and its 1999-2025 past papers.
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The USNCO Study Camp & How Team USA Is Chosen (2026)
Each June, the top 20 USNCO National Exam scorers attend a two-week residential Study Camp at the University of Maryland, where four are chosen for Team USA at the International Chemistry Olympiad. Here is how the camp and the selection work in 2026.
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The USNCO Lab Practical: The Hands-On Component, Explained (2026)
The USNCO National Exam includes a 90-minute laboratory practical judged on real bench technique. Here is what it tests, why hands-on skill matters, and how to build lab readiness.
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The USNCO Syllabus: What Chemistry It Actually Covers (2026)
What the USNCO syllabus actually covers in 2026: general and physical, organic, inorganic and analytical chemistry — and how that scope maps across the three parts of the National Exam.
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The Local Chemistry Olympiad: The First Tier, Explained (2026)
The Local Chemistry Olympiad is the USNCO entry tier each March, run through ACS Local Sections for ~10,000 U.S. students. Here is how it works and qualifies you onward.