How IOL National Teams Are Chosen: Inside NACLO, Selection Rounds and Travel Funding (2026)
NACLO is the North American feeder into the IOL: two rounds, a team of four to eight, and an eligibility rule that shuts out mainland-school students.
Computational Linguistics Problems Explained: Encodings, Sort Orders and Rule Machines (2026)
The algorithmic family of linguistics olympiad problems – encodings, sort orders, rule cascades, ambiguity and alignment – with worked mini-examples and no programming required.
NACLO or the China Route? Which National Linguistics Olympiad Path You Are Actually Eligible For (2026-2027)
There is no direct entry to the IOL. You qualify through a national olympiad first — and which one you may enter is decided by citizenship and where you are enrolled, not by how good you are at puzzles. Here is the eligibility fork, the two-round NACLO structure with its real numbers, and what each group should do instead of guessing.
Which Qualifying Route Gets You to the IOL? NACLO vs UKLO vs OzCLO for International-School Students (2026)
You cannot enter the IOL directly — you qualify via a national contest. How NACLO, UKLO and OzCLO differ on eligibility and logistics, and how to find your route.
National olympiad calendars · NACLO, UKLO, OzCLO dates locked
Round 1 dates for the three largest English-language national olympiads (NACLO, UKLO, OzCLO) are now confirmed and posted to the Competition page calendar.