Korea Tourism.org has a variety of contests going on right now. There is a tourism photo contest with the deadline of July 13th and an essay (photo essay? – they require 3 or more photos in the essay). The essay contest is in honour of the Visit Korea year 2010-2012 but I don’t think essays mocking the chronology will win. I can’t find a direct link to it but on the main page, upper left, is a button describing special promotions.
I found the contests will looking for other contests that might interest my students; caption contests and the like. A photo contest isn’t quite as useful for an ESL class, but it might help. Anyway, in searching for “photo contest korea” I found a great shot of Haedong Yonggung Sa. Now I want to visit it, even if it is not Buddha’s Birthday. Congrats to Doug Huffer, who I think is a Busan Gyeongnam KOTESOL member.