- "Any student found in posession [sic] of a spell-check charmed quill will be punished severely"
- —Educational Decree Number One[src]
A Spell-Checking Quill is a type of quill that is used to correct an individual's mispelling.
Behind the scenes
- It is possible that when the charm wears off it results in worse spelling than before, as Ron's homework was left with terrible misspellings: "belligerent" starting with "bum" and "augury" with "org", as well as "Dementors" as "Dugbogs", and his own name became "Roonil Wazlib".