One of the reasons stories are memorable is that they can create an emotion within us which then kicks of a wave of body chemicals coursing through our veins. These chemicals ensure we remember the situations that created them. We remember what we feel.
I was reminded of this phenomena re-watching this remarkable documentary called A Class Divided. The participants in the experiment are unlikely to ever forget their experience with their teacher, Mrs Jane Eliot.
You can see the whole documentary on the PBS website in higher definition here