Krista Allen and Michael Rosenbaum ended up dating for a brief time after meeting during this episode.
Krista Allen guest stars as the biology teacher. In fact she majored in education at Austin Community College, Texas and then interned as a kindergarten teacher before she decided to pursue an acting career.
This episode features an uncredited cameo appearance from Rose McGowan.
Originally in the Pilot Clark was to have developed his heat vision in a sex ed class (similar to the episode). It was dismissed for the time as the creative team thought it was too soon, and wanted to develop better visuals for it.
Towards the end, Clark Kent is seen reading a book titled 'Fahrenheit 451' written by Ray Bradbury. The book talks about the firemen outlawing every house that contains books, seen as a reference to the fact that Clark learns his unique habit to ignite things.