Failing my driver's test

I was a junior in high school. I had studied and studied the driver's test book, and my Dad had patiently driven me around the neighborhood. I felt extremely confident on the Saturday I drove down to the driving course with my mother to take the test. I answered the book test and then drove easily around the course with the policeman in the car. But at a stop sign, I was much too quick to pull out. It seemed so silly to sit there when there weren't any cars on this obstacle course. The policeman gave me a "not pass." He explained to my mother that he often gave a "not pass" to students to teach them patience.