Caribou in Covid: Contests are running online as usual. Check out the FAQ for further questions.

Participation in Caribou Contests

Thank you for your interest in Caribou Contests. Here you can find information about participating in the contests and how to sign up. You can sign up for Caribou Contests at any point in the year, even just for one contest, and even on contest days.

Click on the links below to jump to a section.

  1. Overview
  2. Eligibility
  3. Contest Rules
  4. Fees
  5. Upcoming Contests
  6. How to Register
  7. Access Codes
  8. Questions

Overview of Caribou Contests

Caribou is an international online math competition run by a small team in Canada and representatives in other countries.

A short summary :

  • Levels:
    6 grade levels offered (2, 3/4, 5/6, 7/8, 9/10, 11/12)
    • Students can participate in only one contest level.
    • Students can participate in either their grade level or higher, never a lower grade level.
    • Strong students are encouraged to participate in a higher level.
    • Try out previous contests first to decide in which grade level to participate.
  • Languages:
    7 languages on offer: English, French, Persian, Mandarin Chinese, Azerbaijani, Ukrainian, and Khmer.

  • Frequency:
    6 contests per year held over two days (a Wednesday and a Thursday). Schools often have some grades write on the first day and the rest on the second day, but this is up to the teachers' discretion. For dates, see Upcoming Contests on our homepage or in the sidebar.

  • Timing:
    Students have 50 consecutive minutes to complete the contest once they have started it. Students can start a contest at any time within their school’s contest time window (by default 7:30-15:30 local time). The last possible time to start a contest is Thursday 18:30 EST.

  • Prizes:
    Cash prizes are awarded to top performing students at the end of the year. See the Prizes page for details.

  • Special features:
    • Full results on the evening of each contest’s end
    • Interactive questions using fun math & logic games (every contest, announced 2 weeks in advance)
    • Math History questions (two contests per year, announced 2 weeks in advance)
    • Video solutions on our Youtube & Dailymotion channels
    • All previous contests including interactive questions available as previous tests online 24/7
    • Certificates of participation and merit for individual contests and for the whole Caribou Cup, which counts the best 5 out of 6 contests

Go back to top of page.


Any school-aged child can participate in Caribou Contests, no matter their nationality or schooling situation. The competition is online so you can participate from anywhere in the world!

To participate you need only 4 things:

  • A Contact person to run the contest (usually a teacher, librarian, homeschooling parent or tutoring centre director)
  • A place to write the contest (usually a school, homeschool, library, tutoring centre)
  • A device with internet access (computers are preferred but tablets and smartphones are also possible)
  • A valid access code (see Fees, below)

Go back to top of page.

Contest Rules

These are the contest rules one agrees to when participating in Caribou Contests:

  • An adult must be present to supervise the contest and ensure fair participation.
  • Once started, students have 50 consecutive minutes to complete the test.
  • If a student is idle for 30 minutes, their participation will automatically close.
  • Calculators are neither permitted nor necessary. We recommend using a pencil and paper.
  • Students are to write the test individually, with no outside help
    (i.e. from other students, parents, teachers, cheatsheets, textbooks, the internet etc.).
  • Participants may not communicate about the questions before the end of the 2nd contest day.
  • Students may only participate in one contest level.

We count on the supervising adults and the integrity of participants to ensure that these rules are followed. However, we have also developed a series of statistical tools to help identify unfair participation. When unfair participation is detected, we reserve the right to remove the student’s contest entry from ranking. For more information about these tools, see our page about Unfair Participation.

Go back to top of page.


In our goal of promoting mathematics, we try to keep the cost of participation as low as possible. Click here to see an overview of our free & paid services.

The list below gives the cost of participation in the contests. Prices can vary by country, and in some cases it is free. Please visit the Online Shop to see all the prices for your country.

International participation is exempt from tax. In Canada, all prices are subject to tax (HST), which varies by province. Canadian schools can claim the HST back under our business name "Caribou Contests", business number BN 834584237RC0001 and HST number 834584237RT0001.

Cost of Participation:

  • Lowest level contests (Grade 2) are completely free all year.
  • The first contest in October is free for all levels.
  • For the Grade 3/4 level, the fee is $14.40 CAD per student for the remaining 5 contests (upfront payment is possible).
  • For Grades 5 to 12, the fee is $24.00 CAD per student for the remaining 5 contests (upfront payment is possible).
  • For School Wide Contest Access (an unlimited number of participating students in all levels for the full year), the fee is $512.00 CAD.
  • If you have received a Caribou Contests Voucher, participation is free. How to Redeem your Voucher.

Apart from participation in the contests, we offer other online math practice and learning material such as previous contests, tutorials, an interactive geometry mini-course, an automatic proof-verification system, and a calcrostic © puzzle book. Access to these as well as All-Inclusive packages for individuals and schools can be purchased with or without contest participation. For details, visit the Online Shop.

Participation Fees can be paid for by the teacher, school, parents, or third-parties. For information on purchases and payment options, see the Online Shop & Payments section of the FAQ.

Go back to top of page.

Upcoming Contests

Contests can be started between 7:30AM and 3:30PM local time of the participating school by default. Students are given 50 min to complete the test. For questions and concerns please visit our Help page.

Would you like to receive notifications about upcoming contests? Follow us on Facebook and Twitter or join our subscriber list here!

Contest TypeDateGrades
Mathematics13th(Wed) & 14th(Thu) January, 20212, 3/4, 5/6, 7/8, 9/10, 11/12
Mathematics10th(Wed) & 11th(Thu) February, 20212, 3/4, 5/6, 7/8, 9/10, 11/12
Mathematics7th(Wed) & 8th(Thu) April, 20212, 3/4, 5/6, 7/8, 9/10, 11/12
Mathematics5th(Wed) & 6th(Thu) May, 20212, 3/4, 5/6, 7/8, 9/10, 11/12
Contest TypeDateCredits to Participate
Physics30th(Mon) November, 20202

How to Register for Caribou Contests

How you register for Caribou Contests depends on your situation. In any case, every participating student needs 1 valid individual Access Code to participate in 1,2,... or all 6 contests in the Caribou Cup year.

Choose the option which best describes your situation (click on below to view details):

Show Teacher / Librarian / Tutor

Show Students & Parents

Go back to top of page.

Access Codes

An Access Code is a 12-character code starting with the Caribou Cup year. For example, 2021C4R1B0US.

You can think of an Access Code as a Student's account. All account information like the student's name, purchases, and test entries are associated with their Access Code.

Each student needs a single Access Code to participate in 1, 2, ... or all 6 contests in the Caribou Cup (July 1 – June 30).

Access Codes…

  • do not carry over to the next Caribou Cup
  • are associated with a particular grade level
  • become linked automatically with the student’s name upon first sign-in

Show How do I get an Access Code?

Show Where can I find my Access Code(s)?

Show I have an Access Code. Now what?

Show Access Code Validity

Go back to top of page.

Have any Questions?

For any questions about Caribou Contests, please try our extensive Help / FAQ section. From there you will be led to an email form if you are unable to find the answer to your question.

Go back to top of page.