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mathleague.org high school contest dates for 2025-2026 - MO

Here is the list of high school contests confirmed so far for this year. We will be updating this list throughout the year as additional contests are scheduled. Don't see a contest in your area? Contact us for more information about hosting a contest at your school.

We offer three different modes for taking our tests: You can take the test
In-person at a testing venue where students gather to take pencil and paper versions of the tests and compete for trophies and/or other prizes,
Online in a live proctored Zoom meeting where students take the tests on their own computers and compete for prizes, or
On-Demand where students take the tests on their own at any time during a designated window of opportunity.

Events are color-coded below to indicate the testing mode; if no color is present, please contact the coordinator for confirmation of what testing mode will be used. Please note that all students participating in online and on-demand qualifying contests will be competing only against students within their own state or country. We will be assigning separate event numbers to each state and country after testing is over but before results are posted.

Online contests each month are set up so that Qualifier A and Qualifier B are at times students in the Western Hemisphere will likely find convenient; Qualifier C is at a time that will appeal more to students in the Eastern Hemisphere. Students may sign up for any online qualifier they are eligible for but are asked to pay attention to the time zone of the contest so they don't sign up for a contest in the middle of the night unless they want to take the test in the middle of the night.

Remember that each student may only sign up for one contest under each release number. All qualifying rounds are priced at US$30 or less per student; if you are asked by anyone to pay more than US$30 (or the equivalent in another currency) for a qualifying round, please notify us at customercare@mathleague.org.

Click each release number to expand:

  • October Qualifier A0 (Online, XX)
    2025-10-19 - event number 12956
    Ian Leyendecker customercare@mathleague.org
    Click here for more information or to register!

     
  • October Qualifier B0 (Online, XX)
    2025-10-25 - event number 12962
    Ian Leyendecker customercare@mathleague.org
    Click here for more information or to register!

     
  • OTC Richwood Valley (Nixa, MO)
    2025-10-31 - event number 13070
    Ellen Hunter Ellenhunter9973@gmail.com
    Click here for more information or to register!
    This contest is run by one of our partners

     
  • October Qualifier D0 (Online, XX)
    2025-10-26 through 2025-11-02 - event number 12992
    2025-11-02 - event number 12992
    Tim Sanders customercare@mathleague.org
    Click here for more information or to register!

     
  • November Qualifier C0 (Online, XX)
    2025-11-15 - event number 12969
    Emanuel Borja customercare@mathleague.org
    Click here for more information or to register!

     
  • November Qualifier A0 (Online, XX)
    2025-11-16 - event number 12957
    Ian Leyendecker customercare@mathleague.org
    Click here for more information or to register!

     
  • November Qualifier B0 (Online, XX)
    2025-11-22 - event number 12963
    Ian Leyendecker customercare@mathleague.org
    Click here for more information or to register!

     
  • November Qualifier D0 (Online, XX)
    2025-11-23 through 2025-11-30 - event number 12993
    2025-11-30 - event number 12993
    Tim Sanders customercare@mathleague.org
    Click here for more information or to register!

     
  • December Qualifier A0 (Online, XX)
    2025-12-14 - event number 12958
    Ian Leyendecker customercare@mathleague.org
    Click here for more information or to register!

     
  • December Qualifier B0 (Online, XX)
    2025-12-20 - event number 12964
    Ian Leyendecker customercare@mathleague.org
    Click here for more information or to register!

     
  • December Qualifier D0 (Online, XX)
    2025-12-21 through 2025-12-28 - event number 12994
    2025-12-28 - event number 12994
    Tim Sanders customercare@mathleague.org
    Click here for more information or to register!

     
  • January Qualifier A0 (Online, XX)
    2026-01-25 - event number 12959
    Ian Leyendecker customercare@mathleague.org
    Click here for more information or to register!

     
  • January Qualifier B0 (Online, XX)
    2026-01-31 - event number 12965
    Ian Leyendecker customercare@mathleague.org
    Click here for more information or to register!

     
  • January Qualifier C0 (Online, XX)
    2026-01-31 - event number 12971
    Emanuel Borja customercare@mathleague.org
    Click here for more information or to register!

     
  • January Qualifier D0 (Online, XX)
    2026-02-01 through 2026-02-08 - event number 12995
    2026-02-08 - event number 12995
    Tim Sanders customercare@mathleague.org
    Click here for more information or to register!

     
  • February Qualifier A0 (Online, XX)
    2026-02-22 - event number 12960
    Ian Leyendecker customercare@mathleague.org
    Click here for more information or to register!

     
  • Missouri MCTM-Sponsored High School Contest (Missouri Local, MO)
    2026-02-15 through 2026-02-22 - event number 13069
    2026-02-22 - event number 13069
    Sonya Land sonya@mathisfun.org
    Click here for more information or to register!
    This contest is run by one of our partners

     
  • February Qualifier B0 (Online, XX)
    2026-02-28 - event number 12966
    Ian Leyendecker customercare@mathleague.org
    Click here for more information or to register!

     
  • February Qualifier D0 (Online, XX)
    2026-03-01 through 2026-03-08 - event number 12996
    2026-03-08 - event number 12996
    Tim Sanders customercare@mathleague.org
    Click here for more information or to register!

     
  • March Qualifier C0 (Online, XX)
    2026-03-21 - event number 12973
    Emanuel Borja customercare@mathleague.org
    Click here for more information or to register!

     
  • March Qualifier A0 (Online, XX)
    2026-03-22 - event number 12961
    Ian Leyendecker customercare@mathleague.org
    Click here for more information or to register!

     
  • March Qualifier B0 (Online, XX)
    2026-03-28 - event number 12967
    Ian Leyendecker customercare@mathleague.org
    Click here for more information or to register!

     
  • March Qualifier D0 (Online, XX)
    2026-03-29 through 2026-04-05 - event number 12997
    2026-04-05 - event number 12997
    Tim Sanders customercare@mathleague.org
    Click here for more information or to register!

     
These contests are invitation only. If you are unable to attend your scheduled State Championship, you may sign up for the make-up test. Please note that this testing opportunity is purely a chance to experience the test and attempt to qualify for the US National Championship: Students taking the make-up test will not be eligible to participate in a countdown round, will not be eligible for prizes, and will not have their scores listed as part of the official State Championship results or counted as part of their school's sweepstakes score. Students will have their scores added into the nationwide calculations for individual wild card slots and will be invited to the National Championship if they score among the top 10 students in the US for their grade level.
  • State Championship make-up (Online, XX)
    2026-04-26 - event number 13002
    Ian Leyendecker customercare@mathleague.org
    Click here for more information or to register!

     
This contest is invitation only and will be held on May 16
This contest is invitation only


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