Overview
CLMC -> COMC -> CMO -> IMO
The Canadian Open Mathematics Challenge (COMC) is Canada’s premier national mathematics competition open to any student with an interest in and grasp of high school math. The purpose of the COMC is to encourage students to explore, discover, and learn more about mathematics and problem solving. The competition serves to provide teachers with a unique student enrichment activity during the fall term, it is 2.5 hours long. It is the most prestigious math competition in Canada, and one of the most prestigious in the Americas. The COMC is the only way to be invited to the CMS’ free, exclusive training camps and compete internationally as part of Math Team Canada!
Depending on their grade level and performance, students participating in the COMC will also have the opportunity to be considered for university scholarships, get invited to math camps, garner awards, and win prizes.
CMO Qualifier: The results of the COMC matter! Approximately 100 – 120 top-ranking students from the COMC are invited to write the Canadian Mathematical Olympiad (CMO) or the Junior CMO (CJMO) in March. The CMO, in turn, is a qualifier for Team Canada at the International Mathematical Olympiad (IMO) held in a different city each July.
EGMO Qualifier: The top 6 – 8 COMC female contestants will also qualify for selection to represent Canada at the European Girls’ Mathematical Olympiad (EGMO). EGMO is an international mathematics competition held each April in a European host city each year.
APMO Qualifier: Approximately 10 – 20 top-ranking students from the COMC are also selected to write the Asia-Pacific Mathematical Olympiad (APMO) as Team Canada.

Registration
Normally, all registration is done by teachers or school staff using their Portal accounts.
* Last day for registration is Thursday, October 23rd (or October 15th for shipped exams).
Participating Schools & Organizations
Normally, all registration is done by teachers or school staff.
Independent Students
Only for students whose school is not participating.
Parents: If you have not already, please reach out to your child’s school and ask if they are interested in creating a school account and hosting students for the competition.
For students whose schools are not participating through a teacher, we plan to offer a limited number of spaces hosted by some of our university partners. These students must pre-register and pre-pay to attend one of these Open Writing Centres located at the universities.
Further information about these (locations, times, etc.) will be posted here when available.
*Registrations have not opened for independent student registration yet, they will be opening on or around September 16th.
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If space is not (or not yet) available, we can add you to a notification email list. When registrations open and spaces are available, we will send an email to you.
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Paper Exams
All students – with rare, authorized exception – will write the COMC on paper in the physical presence of a qualified proctor, typically a teacher at their school.
Rates and Delivery Methods
Schools can order exams to be pre-printed by the CMS and shipped to them by courier (“Shipped by Courier”) or can receive the exams as PDF files which are uploaded directly to the Competitions Portal (“PDF Delivery”) that their proctor/teacher can download and print locally prior to the competition. Due to the shipping, printing and handling costs, the PDF option is less expensive.
Shipped by Courier (deadline: Oct 15) | PDF Delivery (deadline: Oct 23) | |||
---|---|---|---|---|
School Location | Cost/exam | Minimum order size | Cost/exam | Minimum order size |
Canada | $35.00 CAD | 5 | $30.00 CAD | 3 |
USA | $40.00 USD | 5 | $35.00 USD | 5 |
Elsewhere | n/a | n/a | $35.00 USD | 5 |
Payments and Cancellations: All payments are due by Oct 23rd (Oct 15th for shipped exams). We reserve the right to cancel unpaid orders.
Paid orders cannot be modified or refunded.