- January 29 - NACLO Open (First Round)
- March 12 - NACLO Invitational (Second Round)
- For instructions and details, read the 2015 handbook
- Thursday July 30, 2015NACLO results at the IOL - Press Release
- Tuesday July 7, 2015The International Linguistics Olympiad starts in 12 days.
- Tuesday July 7, 2015July Press Release
- Thursday April 2, 2015Problems and solutions from 2015 have been posted on the practice problems page.
- Thursday April 2, 2015Results from the Invitational Round
- Thursday April 2, 2015April Press Release
- Wednesday April 1, 2015Results from the invitational round will be posted by April 2. The problem sets and solutions will also be released by April 2.
- Saturday February 28, 2015Results from the Open Round have been posted. You can see your results by logging in at the bottom of this page. The list of students who qualified for the second round so far is listed here. IMPORTANT - a small number of booklets haven't been graded yet. If your score shows up as 0, you are one of these students. We will post the remaining scores by Monday.
- Friday February 6, 2015The NACLO Open Round is complete. Results will be posted by the end of February.
- Wednesday January 28, 2015Online registration ends at 3 PM EST (noon PST) on Wednesday, January 28, 2015. If you want to participate as a walk-in on Thursday, please contact the host for your preferred site to confirm that walk-ins are allowed at that site.
- Friday December 19, 2014 Registration deadlines for this year's contest have been announced:
- Regular registration deadline: January 15, 2015
- Late registration deadline: January 28, 2015 (noon PST), if space available (Walk-ins are allowed with advance permission of the local site host)
- Monday August 18, 2014 The invitational round will be shortened in 2015. Whereas in previous years, the invitational round was five to six hours with a lunch break in the middle, this year it will be four hours long with no break. See "Frequently Asked Questions" in the handbook for more details.
- The 2015 Handbook is now available.
- The following dates have been tentatively picked for the 2015 competition: January 29 and March 12.
- Press Release about the 2014 IOL
- Press release about the 2014 Invitational Round
- Results from the 2014 NACLO Invitational Round
- Results from the 2014 NACLO Open Round
Problems and Solutions
Register for the next competition
Challenge yourself online with practice problems
All you need to know about NACLO in one place
Suggested reading, links, etc.