The North Suburban Math League is a group of schools in the Chicago area that compete in five math competitions throughout the school year.

Welcome to the 2022-2023 Season!

If you have any questions, comments, or concerns, email

The current president of NSML is Andrew Mauer-Oats, Contact him with administrative issues.

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Assistant coaches - add yourself to the mailing list if you are not receiving emails. Log in, then under Account, choose Email Lists.


  • 2022-08-28 Meet 4 date officially changed to February 2, 2023.
  • 2022-05-08 Resource for the 2022 Meet 1 Freshman topic. Basic Statistics information for coaches.
  • 2021-11-29 Assumed knowledge, especially for probability.
  • 2021-08-21 Writers for the 2021 Meet 1 orals used the 6th edition of Burton's, Elementary Number Theory. There are no changes from the 5th edition in this chapter. Chapter 2 contains the following sections:
    • 2.1 Early Number Theory (11 exercises)
    • 2.2 The Division Algorithm (11 exercises)
    • 2.3 The Greatest Common Divisor (23 exercises). Includes some proofs like "if d divides n then 2^d-1 divides 2^n-1".
    • 2.4 The Euclidean Algorithm (12 exercises)
    • 2.5 The Diophantine Equation ax+by=c (8 exercises)