Crossword Genius

What is taught at charm school? (8)

Ross

I believe the answer is:

spelling

I'm a little stuck... Click here to teach me more about this clue!

'what is taught' is the definition.
I can't tell whether this definition defines the answer.

'at charm school?' is the wordplay.
'at' says to put letters next to each other.
'charm' becomes 'spell' (both can mean a bit of magic).
'school?' becomes 'ing' (I can't justify this - if you can you should give a lot more credence to this answer).
'spell'+'ing' is 'SPELLING'.

Can you help me to learn more?

(Other definitions for spelling that I've seen before include "Competition to list the letters of a word" , "component of education" , "Naming the letters" , "Reciting the letters of a word" , "kind of bee?" .)

I've seen this clue in The Irish Independent.
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