Bechdel test

Tanya joked that April just made them fail the Bechdel test when she brought up that she wanted to ask Charlie out to the prom. (TV: For Tonight We Might Die)

Behind the scenes
To pass the Bechdel test, a piece of media has to have at least one conversation between women about something other than a man. This is an almost fourth wall-breaking reference, as this was Class's first conversation between girls.