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Tell me about the International Linguistics Olympiad.
The International Linguistics Olympiad (IOL) is one of 12 International Science Olympiads for secondary school students that has been held annually since 2003. Each year, teams of young linguists from around the world gather and test their minds against the world's toughest puzzles in language and linguistics.
How do I prepare for the International Linguistic Olympiad?
Preparation for The International Linguistics Olympiad (and national olympiads before that) generally consists of two parts: problem solving - find all linguistic problems that you can find and try to solve them. theoretical knowledge - this is not a strict requirement, but it may help you a lot.

Question: How tough is the exam?
Self-contained rewrite: How tough is the exam for the International Linguistic Olympiad?