Introduction

The Cambridge Chemistry Challenge (C3L6) is a global challenge for high school students co-sponsored by the Department of Chemistry and St Catharine’s College at the University of Cambridge. It is officially recommended by the University of Cambridge as a high school academic program. C3L6 is a highly valued chemistry challenge for UK high schools, with over 10,000 students participating each year, and is often used as a pre-test for the UKChO (UK Chemistry Olympiad). It is aimed at high school students up to Year 11 and designed to extend chemistry knowledge in a challenging but fun way.

C3L6 is based on A-level chemistry knowledge, but is more difficult than A-level and examines students’ ability to apply their A-level chemistry knowledge in a flexible way. It is a highly rewarding challenge for students who want to explore the field of Chemistry further and its results are highly sought after by the world’s leading universities. The challenge will be judged by Cambridge University and awarded according to a global cutoff score.

One of most prestigious Chemistry competition in the world

+10,000 students

attending each year with over 60% winning rate

Highly recommended

super-curricular for high school students by University of Cambridge

Hosted by

the Department of Chemistry and St. Catherine’s College, University of Cambridge

UK Chemistry Olympiad

is the continuation competition of C3L6

Essential

for the UK top universities’ application

Rules

Language: English
Date: Dec. 6, 2026 (Mon.) (90 mins)
Time: 16:00-17:30 (90 mins) GMT+7 Vietnam Time
Form: Online
Students Eligibility: Grade 9-11 / Year 10-12 (G1 to AS)
Type: Individual test
Format: Test papers consists of 2-3 general chemistry questions with a dozen related sub-questions
Topics: A-Level Chemistry Course

Award

2025 cutoff score:

● Roentgenium Award: 50
● Gold Award: 29
● Silver Award: 18
● Copper Award: 12

St Catharine’ s College, Cambridge Chemistry Camp

The St Catharine’s College, Cambridge Chemistry Camp is an annual chemistry camp organized for top students in the UK who have received the C3L6 Roentgenium Award, representing approximately the top 0.7% of C3L6 achievers. The camp is led by the renowned chemistry professor, Prof. Peter Woother, who serves as the head coach of the mentoring team. Due to the rigorous selection criteria and high academic standards, most outstanding students who participate are admitted to G5 universities such as Cambridge, Oxford, and Imperial College London in relevant majors. Starting from 2024, St Catharine’s College, University of Cambridge will selectively invite 35 students from China to participate in St Catharine’s College, Cambridge Chemistry Camp. The camp aims to provide an in-depth exploration of chemistry and an opportunity to learn about the university-level chemistry courses at Cambridge. Selected participants will engage in discussions on cutting-edge theories, conduct hands-on experiments to verify problem-solving approaches, and receive an official certificate from St Catharine’s College. Participants will also stay in dormitories at St Catharine’s College, and experience the traditional formal gown dinner of the University of Cambridge.

  • Date: Jun.2027 (TBD)
  • Location: St Catharine’s College, Cambridge, UK
  • Eligibility: Award Winners in UKChO & C3L6 by Invitation

 

registration form

Includes the exam, grading, proctor fee, past-papers, certificates. 

registration deadline

21th November 2026

Consultation