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 2020-2021 Season!

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

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

Quick Links

Full Remote Plan Approved

On August 6, 2020, the board approved the following plan:

The entire NSML season will be conducted remotely, with as few changes as possible from the way seasons have been run in the past. Contest dates remain the same. The testing window will be 6-8pm. Orals will be conducted the day before the meet date. All details are available in an email to coaches. Dues for the season are reduced to $100.

Coach Email List

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


  • 2021-03-01 Meet 5 will follow the same schedule as Meets 1-4. Compete in the 6-8pm window. Do not discuss until 8pm at the earliest.
  • 2021-02-23 This year we will continue the usual practice of allowing calculators at Meet 5. CAS is allowed for juniors and seniors.
  • 2021-02-20 NSML Meet 5 will allow alternates in 2021. This ability is live now.
  • 2021-02-17 Dates updated. ICTM Regionals: February 24. ICTM State: March 16-18.
  • 2020-11-05 The meet 3 orals source, Geometry Revisited, has been republished so it has more than one ISBN. They have the same text. The table of contents of chapter 1:

    Chapter 1: Points and Lines Connects with a Triangle 1.1 The extended Law of Sines 1.2 Ceva's theorem 1.3 Points of interest 1.4 The incircle and excircles 1.5 The Steiner-Lehmus theorem 1.6 The orthic triangle 1.7 The medial triangle and Euler line 1.8 The nine-point circle 1.9 Pedal triangles

  • 2020-11-02 ICTM 2021 has no orals. The NSML Meet 4 orals topic will be "Combinatorial Identities".