I have only just discovered that along with the many other science and mathematical Olympiads, there is an
International Linguistics Olympiad. The sample questions are amazing.
Unlike another Olympiad I never heard of at school (the
International Olympiad in Informatics - we knew about the Chemistry, Physics and Maths ones, and I assumed there was a Biology one as well), the Linguistics Olympiad started two years after I left school, and
the UK one has only been going since 2009.
But having looked at the sample questions, I am so enthused about it that I am likely to have a look at some of them in more detail this evening. :D