North American Computational Linguistics Open Competition

This competition is a contest in which high-school students solve linguistic puzzles. In solving the problems, students learn about the diversity and consistency of language, while exercising logic skills. No prior knowledge of linguistics or second languages is necessary. Professionals in linguistics, computational linguistics and language technologies use dozens of the world's languages to create engaging problems that represent cutting edge issues in their fields. The competition has attracted top students to study and work in those same fields. This is truly an opportunity for young people to experience a taste of natural-language processing in the 21st century. The winners of the invitation competition will be eligible to represent North America at the International Linguistic Competition. See more details and register at the national NACLO site.


The NACLO 2021 Handbook contains all the information you need for how to register, when the contests take place, where you can sign up, and locations that are hosting the competition.

Important Dates

Register by January 15, 2021 to secure your seat at the site.  This year's student registration deadline for the At-Home option is January 15, 2021, and must be strictly enforced to give NACLO the required time to ensure all At-Home participants are individually set up for the January 28 Open Round.
Open round: Thursday, January 28, 2021


Participation is free. Students who are interested in can register at the NACLO registration site.



The NACLO YouTube Channel has videos by past team participants. See their process in solving a NACLO or IOL problem.

Sample Problems

View practice problems and solutions on the NACLO website

Contact Us

Questions? Please contact Prof. Rebecca Bates at 507-389-5587 or for more information.