A lot of teachers and parents believe that "Tobermory" by Saki is beyond most high school students. They're wrong. This was previously thought to be a children's short story. High school students can certainly read this. But, just in case you are concerned, we decided to put up a free audio version of the "Tobermory" at our Audio-Text pages.
So, please feel free to have your students listen and read Saki's "Tobermory" here.