"Teacher's Pet" is a popular song written by Joe Lubin and published around 1956.
While the lyrics are sung from the point of a view of a student in love with a teacher, in the film Day played a teacher romanced by an adult student (Clark Gable).
Day's version was also issued as a single on Columbia Records, reaching #56 on the Billboard Hot 100 chart and #36 on the Cash Box Top 100 chart.
The song was performed by Parker Posey in the 1997 film Waiting for Guffman.
In 2004, Christy Carlson Romano performed a pop version of the song for the soundtrack of Disney's animated film of the same name and in a subsequent music video.