I don't know if speech contests are big in Korea, but here in Taiwan almost every school holds one each year. This is a collection of a hundred or so speeches from the past few years. Most of them I wrote, some of them the students wrote. Unfortunately there's no real organization to the collection so you'll have to go through and check each one to see if it's appropriate for your students' levels. If there's a number in the file name, that refers to the student's grade. Enjoy!
