In 'Pulp Fiction', the music is carefully curated to set the mood. Regarding Ricky Nelson's 'Waitin' in School', it could be that it was chosen to add a certain retro feel to a particular scene. Maybe it was playing in the background of a diner or a car ride in the movie's fictional world, but without a more in - depth study, it's hard to say for sure.
Well, 'Pulp Fiction' is known for its eclectic use of music. Ricky Nelson was a popular figure in music history. 'Waitin' in School' has a certain charm and energy. In the context of 'Pulp Fiction', it could potentially be used to enhance a character's mood or to give a sense of the time period. For example, if a character was reminiscing about their youth, this song could be playing in the background to bring that feeling to life. However, without Quentin Tarantino (the director) explicitly stating the reason, it remains somewhat of a mystery.