I'd like to draw your attention to the International Linguistics Olympiad's "Call for Donations and Sponsorships".
From the appeal:
Linguistics Olympiads are contests for high school students that exercise skills in logical and analytical thinking using linguistic data. Puzzles are self-contained and require no prior knowledge of languages or linguistics.
There have been eight IOL contests since 2003 in Bulgaria (2003, 2008), Russia (2004, 2007), The Netherlands (2005), Estonia (2006), Poland (2009), and Sweden (2010).
In 2010 twenty six teams from eighteen countries participated. Countries that have participated at least once are Countries Australia, Bulgaria, Czech Republic, Estonia, Finland, Germany, India, Ireland, Latvia, Lithuania, Netherlands, Norway, Poland, Romania, Russia, Serbia, Singapore, Slovenia, South Korea, Spain, Sweden, UK, and USA.
IOL 2011 will be held on July 24-30 at Carnegie Mellon University. As the host country, we provide room and board for one team and one coach from each country. Expenses will be around $60,000.
I plan to make a donation, and I hope that you will too.
A sample of past problems is available here.