A Genius Among Us is the second episode of the third season of Recess, which was first broadcast on September 11th, 1999.
Somebody solves Gretchen's complicated mathematical problem during recess who turns out to be Hank the janitor.
Continuity error: Randall appears in Miss Grotke's class in this episode only.
Continuity error: Butch appears in Miss Grotke's class for one scene in this episode only, even though he's in the fifth grade.
In some parts of this episode, Gretchen is shown writing with her left hand, whereas in other parts, she is shown writing with her right hand, the possibility of it being a goof is low, since this is repeated too often. Thus she is ambidextrous.
This episode is loosely based on the film Good Will Hunting.