Top 10 Chemistry Competitions for High School Students in 2025-2026

Ever wondered how chemistry competitions for high school students can help you shine before college? These competitions let you tackle challenging problems, conduct experiments, and present research in ways that show top schools like the Ivies you are ready for advanced STEM work. In this blog, you will find a clear breakdown of the best chemistry competitions for high school students, including dates, prizes, and what you can expect as a participant.

• What Are the Best Chemistry Competitions for High School Students?
• U.S. National Chemistry Olympiad (USNCO)
• International Chemistry Olympiad (IChO)
• Regeneron Science and Engineering Fair (ISEF)
• Science Olympiad
• National Science Bowl (NSB)
• Regeneron Science Talent Search (STS)
• Junior Science and Humanities Symposium (JSHS)
• Washington University Chemistry Tournament (WUCT)
• Canadian Chemistry Contest (CCC)
• Sigma Xi Student Research Showcase
• Frequently Asked Questions
• Takeaways

What Are the Best Chemistry Competitions for High School Students?

Below is an overview of the best chemistry competitions for high school students:

Let’s discuss each competition one by one.

1. U.S. National Chemistry Olympiad (USNCO)

• Dates: February 27 – March 16, 2026
• Location: Local exams held at high schools and universities across the U.S.
• Prizes: Top scorers may advance to the National Exam and Study Camp; the ultimate winners can represent the U.S. at the International Chemistry Olympiad and earn medals and certificates

The U.S. National Chemistry Olympiad (USNCO) is a chemistry competition for high school students who are U.S. citizens or permanent residents. You start with the Local Exam, which tests physical, organic, and inorganic chemistry. ACS Local Sections select the highest scorers to advance to the National Exam.

The National Exam challenges you with theory, problem-solving, and advanced chemistry concepts. The top 20 scorers attend a two-week Study Camp that includes lab experiments, lectures, and problem-solving exercises. Camp performance determines the four students who will compete internationally.

Students must be in grades 9–12, under 20 years old, and enrolled in a U.S. high school or accredited American school abroad. Only non-programmable calculators are allowed during exams. Students who have previously attended the Study Camp automatically qualify for the National Exam without counting against school nomination limits.

Ready to put your chemistry skills to the test and see how you rank nationally? Check out our full guide to USNCO.

2. International Chemistry Olympiad (IChO)

• Dates: July 5 – 14, 2025
• Location: Dubai, United Arab Emirates
• Prizes: Gold, silver, and bronze medals for top scorers; honorable mentions for high-ranking participants

The International Chemistry Olympiad (IChO) is an annual competition for top high school chemists worldwide. Each country sends four students and two mentors. You compete individually in a five-hour laboratory practical exam and a five-hour theoretical exam. Final scores determine medals and rankings.

You must be selected by your national chemistry Olympiad and be in grades 10–12, under 20 years old. Exams test advanced knowledge of chemistry, problem-solving, and lab techniques across physical, organic, and inorganic chemistry.

IChO includes lab sessions, educational activities, and cultural experiences. Winning medals provides international recognition, strengthens college applications at Ivy League schools such as Harvard, Yale, Princeton, and Columbia, and supports future research opportunities.

Want to compete with the best young chemists from around the world? Check out our full guide to IChO.

3. Regeneron Science and Engineering Fair (ISEF)

• Dates: May 9–15, 2026
• Location: Phoenix Convention Center, Phoenix, Arizona
• Prizes: Nearly $9 million; Grand Awards $600–$100,000, plus Special Awards, scholarships, and internships

Regeneron ISEF is the top international science competition for high school students in grades 9 through 12. You qualify by winning at a Society-affiliated fair. Projects can be individual or team-based and cover 22 categories, including Chemistry, Biomedical Engineering, and Physics.

Finalists present their research to judges from universities, government, and industries. ISEF also connects you with mentors, peers, and universities, offering networking opportunities, internships, and scholarships. Special Awards are sponsored by organizations such as NASA and the American Chemical Society and recognize innovation in specific fields. 

Grand Award winners can earn up to $100,000, while many finalists receive additional prizes. At AdmissionSight, we recommend participating in ISEF to strengthen your application to top STEM schools such as MIT and Harvard. To learn more, check out our full guide to ISEF.

4. Science Olympiad

• Dates: May 22–23, 2026
• Location: National Tournament at University of Southern California, Los Angeles, California
• Prizes: Medals for event winners, championship trophies for top teams, $50,000 Founders’ Scholarships, $2,000 Spirit Awards

Science Olympiad is a team STEM competition for high school students in Division C (grades 9–12). Teams can have up to 15 members, with a maximum of seven 12th graders. You compete in events including chemistry experiments, lab activities, and problem-solving challenges. Each event focuses on applied science skills.

You start at invitational, regional, or state tournaments to qualify for the National Tournament, where 120 of the top U.S. teams compete. Coaches and mentors guide you on event preparation and problem-solving techniques. Science Olympiad partners with universities and organizations such as NASA, Ward’s Science, and the University of Delaware to provide workshops, kits, and resources for teams.

Awards include medals for individual events, trophies for top-performing teams, $10,000 Founders’ Scholarships for five outstanding seniors, and Spirit Awards of $2,000 for teams showing teamwork and sportsmanship. Only students on registered Division C high school teams are eligible.

Check out our full guide to the Science Olympiad to learn more.

5. National Science Bowl (NSB)

• Dates: April 30 – May 4, 2026
• Location: Washington, D.C.
• Prizes: Scholarships, team trophies, and national recognition

The National Science Bowl (NSB) is organized by the U.S. Department of Energy. Since its inception in 1991, over 350,000 students have participated in the contest.

You and your team of four students plus one alternate answer fast-paced questions in biology, chemistry, physics, mathematics, Earth and space science, and energy at a college freshman level. Middle school students compete in life science, physical science, Earth and space science, energy, and mathematics.

Teams start at regional tournaments, either in-person or virtual, and winners advance to the National Finals. To help you handle challenging questions, we recommend preparing with AP coursework, teacher guidance, or team study sessions. See our full guide to NSB for our detailed tips.

6. Regeneron Science Talent Search (STS)

• Dates: March 5–11, 2026
• Location: Washington, D.C.
• Prizes: $3.1 million total. Top prize $250,000; remaining awards range from $40,000 to $175,000. Top 300 Scholars receive $2,000 each, and their schools receive $2,000 per scholar.

Regeneron STS is for high school seniors submitting an original, independent research project in science, math, engineering, or medicine. Projects must have data and results; literature reviews or unfinished experiments do not qualify. 

Team projects are not allowed, but you can conduct research in a lab, at school, in the field, or at home with adult mentors as long as your contribution is clearly independent. 

The top 300 Scholars earn awards, and the 40 Finalists travel to Washington, D.C., to present their projects, participate in panel interviews with PhD judges, and compete for the top 10 prizes. Awards range from $40,000 to $250,000.

Ready to showcase your independent research and compete for top prizes? Read our full guide to Regeneron STS.

7. Junior Science and Humanities Symposium (JSHS)

• Dates: Regional symposium dates vary by region
• Location: Regional sites nationwide; National Symposium: Albuquerque, New Mexico
• Prizes: More than $400,000 total. Regional awards: $2,000 for first place, $1,500 for second place, $1,000 for third place. National oral awards: $12,000, $8,000, and $4,000. National poster awards: $550, $450, and $350.

The Junior Science and Humanities Symposium (JSHS) is a free STEM research competition for students in grades 9 through 12 sponsored by the Department of Defense. You enter as an individual by submitting original research, which can include chemistry experiments, data analysis, or applied laboratory work. Students from the United States, U.S. territories, and DoDEA schools may participate.

You start by locating your region on the JSHS website and submitting a written research report. Judges select students to present at their Regional Symposium. The top five students from each region advance to the National Symposium. 

The top two compete in the oral session for undergraduate scholarships, and the following three present posters for cash awards. The National Symposium is an in-person, all-expenses-paid event.

Check out our full guide to JSHS to learn more about this chemistry competition.

8. Washington University Chemistry Tournament (WUCT)

• Dates: April 5, 2025
• Location: Washington University in St. Louis, Danforth Campus
• Prizes: Individual, Topic, Team, Breaking Bonds, and Director’s Awards

The Washington University Chemistry Tournament is a one-day chemistry competition for high school students in grades 9 through 12. You compete in teams of six and work through four exam rounds that test applied chemistry knowledge in different formats.

The Individual Round scores your own work. The Topics Round pairs you with a teammate for themed chemistry exams such as Chemistry of Science Fiction, Chemistry of Illumination, and Chemistry of Wacky Elements. The Team Round scores your whole group on a collective exam, and the Breaking Bonds Round uses a relay structure where your team selects problem packets with different difficulty levels to earn points.

You solve problems that apply general chemistry concepts to real scenarios and interact with WashU students and faculty who run the event and lead short academic activities. Awards recognize top individuals, top topic-pair teams, the strongest full teams, and combined overall performance through the Director’s Award.

9. Canadian Chemistry Contest (CCC)

• Dates: April 22, 2026
• Location: Your school or online
• Prizes: Top performers are recognized nationally and may be invited to the Canadian Chemistry Olympiad (CCO) training camps

The Canadian Chemistry Contest targets the top 10% of Canadian high school and Cégep students under 20 who excel in chemistry. The exam has three parts that assess problem-solving skills, conceptual understanding, and analytical reasoning in chemistry. Your performance in the CCC determines eligibility for the CCO, which is aimed at the top 5% of these students and serves as the pathway to the International Chemistry Olympiad.

You take the CCC individually, either at your school or online. Students selected for the CCO training camps in May, June, and July 2026 receive instruction from graduate chemistry students, who guide them through Olympiad-level problems. Preparing for the CCC involves mastering both standard high school chemistry and advanced problem-solving exercises from previous contests.

10. Sigma Xi Student Research Showcase

• Dates: April 12 – April 26, 2026
• Location: Online
• Prizes: $500 first place, $250 second place in the High School Division; top presenter across all divisions $500; People’s Choice $250

The Sigma Xi Student Research Showcase lets you present chemistry research through a website with a research abstract, technical slideshow, and video explaining your work to a general audience.

You can compete in the High School Division if you are in grades 9–12. The competition covers all areas of chemistry, including biochemistry, molecular biology, and environmental chemistry. Judges score your abstract, methods, results, and overall clarity, and they provide feedback through the platform.

Awards include first and second-place in the division, $500 for the top presenter across all divisions, and $250 for the People’s Choice winner.

Frequently Asked Questions

1. Who can participate in chemistry competitions?

Most chemistry competitions for high school students are open to grades 9 through 12, though some have age or grade restrictions depending on the event. You usually need to attend a high school or an accredited program and meet specific eligibility requirements, such as citizenship or residency, for national contests.

2. How should I prepare for chemistry competitions?

Preparation depends on the type of competition you enter, but reviewing your textbooks, practicing problem-solving, and doing hands-on experiments can really help. You can also use past competition questions or study guides to get familiar with the formats and difficulty level. Joining a club or working with a mentor can give you guidance, feedback, and tips that improve your chances of performing well.

3. Do I need to conduct original research for chemistry competitions?

Some competitions, like Regeneron STS or JSHS, require you to submit independent research projects with real data and results. Others, like USNCO or NSB, focus more on problem-solving, lab exercises, or fast-paced quiz-style questions.

4. What are the benefits of participating in chemistry competitions?

Participating in chemistry competitions for high school students can strengthen your college applications, help you win scholarships, and connect you with other students who share your passion for chemistry. Awards and recognition from top competitions can also open doors to internships, research programs, and future STEM opportunities.

5. Can I participate if my school does not host the competition?

Many chemistry competitions for high school students, like CCC or USNCO, allow you to compete online or at nearby participating schools if your own school is not involved. You can also work with mentors, local science centers, or university programs to gain access to exams and resources.

Takeaways

• You can compete in top chemistry competitions for high school students, such as USNCO, IChO, and Regeneron ISEF, to challenge your skills and see how you rank nationally or even internationally.
• Participating in events like Science Olympiad, NSB, or WUCT gives you hands-on lab experience, team problem-solving practice, and exposure to real-world chemistry scenarios.
• Entering research-based competitions such as Regeneron STS, JSHS, or the Sigma Xi Student Research Showcase helps you develop independent projects, present them to judges, and win scholarships or awards.
• Competing in chemistry competitions connects you with peers, mentors, and universities, boosting your college applications and opening doors to internships and STEM programs.
• If you want to maximize your chances of winning chemistry competitions, consider our Academic and Extracurricular Profile Evaluation Program. We also help you make the most of your experiences to strengthen your college applications.