Robert Frost's first assignment for a class of teachers was to read "The Celebrated Jumping Frog of Calaveras County." This was Mark Twain's famous story about a frog that lost a jumping contest because he had been pumped full of quail shot. When the class next assembled they were mystified because they did not understand what this story had to do with a course in education.

Frost patiently explained to them that this particular story was about teachers. He said that there were two kinds of teachers. There was the kind that filled you with so much quail shot that you could not move and the kind that gave you a little prod on the behind so that you could jump to the skies.