What is NACLO?

NACLO is a contest in which high-school students solve linguistic problems. In solving these 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 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. It is truly an opportunity for young people to experience a taste of natural-language processing in the 21st century.

Announcements

April 19, 2024Grading for the 2024 Invitational Round has concluded. Participant scores, best problem solution awards, and the USA and Anglophone Canada team assignments for the 2024 IOL can be accessed here. The Open Round and Invitational Round problems and solutions will be posted shortly. Thank you for participating in NACLO 2024!
February 26, 2024Grading for the 2024 Open Round has concluded and your score is available in your student account by clicking on your name. The list of students who have qualified for the Invitational Round has been released. You can access it here.
- Please contact nacloinquiries@googlegroups.com if your score is missing or you are having trouble accessing your score breakdown. Congratulations to all participants! We also invite all participants to join the NACLO Discord.
January 25, 2024The 2024 NACLO Open Round took place on January 25, 2024. Registration is now closed for this academic year. We thank all hosts for hosting and all participants for joining this year's contest.
September 26, 2023Registration is now open for the Open Round of the competition on January 25, 2024! Register Here! The Invitational Round of the competition will be March 14, 2024.
April 10, 2023Grading for the 2023 Invitational Round has concluded. Participant scores, best problem solution awards, and the USA and Anglophone Canada team assignments for the 2023 IOL can be accessed here. The Open Round and Invitational Round problems and solutions will be posted shortly. Thank you for participating!
February 25, 2023Grading for the 2023 Open Round has concluded and your score is available in your student account. The list of students who have qualified for the Invitational Round has been released. You can access it here. Please contact nacloinquiries@googlegroups.com if your score is missing.
February 16, 2023The following booklets have been uploaded to the system for grading. If you don't find your submission here, please contact your site host immediately.

Please Donate

You can help support NACLO either by mailing a check or giving online. For more information on both, please see our donations page. We thank you for your support!