* {{Corpsing}}: There's a secret about most productions (spoilered here to prevent people who haven't seen the show having the surprise ruined): [[spoiler: one of the audience spellers will be given the word "catterjeune," which is defined as "an old Nantucket whaling term." After the audience member spells it, the actor playing Vice-Principal Panch breaks character and expresses amazement, and the other actors do the same, whispering to each other and appearing stunned. It's all a fake: the word "catterjeune" ''doesn't exist.'' Any spelling (except from someone who clearly knows the joke and adds completely random letters) will be deemed correct, and the apparent "shock" is a case of the actors deliberately doing this trope.]]
* CutSong: "Why We Like Spelling" shows up on the cast album but generally isn't present in performances.
* DawsonCasting: The adult actors play characters who are in elementary or middle school.
* HarpoDoesSomethingFunny: A few segments can be improvised, though often there are default lines that performers can fall back on. In particular, Panch is often played by an improvisational comic and is given a fair amount of leniency with how he deals with the spellers from the audience.
* HeAlsoDid: The original production was directed by James Lapine, who also directed ''Theatre/SundayInTheParkWithGeorge'' and ''Theatre/IntoTheWoods''.
* OriginalCastPrecedent: And plenty of it:
** Leaf was originally played by the redheaded Jesse Tyler Ferguson; most productions cast a red-headed actor in the role.
** The heavyset Dan Folger originated the role of William Barfée, and as such, the character tends to be played by a larger actor (though it's also possible to go in the other direction and make him stick-thin).
** Mitch Mahoney was first played by Derrick Baskin, who is African-American; the role usually goes to someone of that descent (though it's not specified in the script).
* RevisedEnding: While the officially licensed WhereAreTheyNowEpilogue ending has [[spoiler: Olive's father pick her up from the bee, and Olive growing up to be a loving parent and the host of a radio show]], the original ending that some productions opt to use instead has Olive [[spoiler: come home to an empty house and an uncertain future, but with a new conviction that she will be okay in spite of this]].
* SpecialGuest: When celebrities dropped by the show during its initial New York run, they were chosen as guest spellers, and ActorAllusion abounded:
** Creator/JulieAndrews -- Film/MaryPoppins herself -- was given the word "Supercalifragilisticexpialidocious." And she got it wrong.
** The winner of the Scripps National Spelling Bee was called up, and proceeded to spell ''fourteen'' extremely difficult words correctly (all in a row!) until she was finally stumped.
** During the Tony Award broadcast, Reverend Al Sharpton appeared as the guest speller; he was given the word "dengue" and got it wrong, which allowed the cast to sing "Prayer of the Comfort Counselor." Rona Lisa commented that Sharpton was going to run for class president "on a platform of racial equality and macaroni and cheese."
** One night had special Broadway celebrities, including Brian Stokes Mitchell, Raúl Esparza, and Lea Salonga.
** The Original Broadway Cast Leaf, Jesse Tyler Ferguson, is also Mitchell from ''Series/ModernFamily'', so in any reunion performances, he becomes this.
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