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For schools, stern men remodelled legendary Scottish creature (4,4,7)

Ross

I believe the answer is:

loch ness monster

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'remodelled legendary scottish creature' is the definition.
I don't know anything about this answer so I can't tell whether it can be defined by this definition.

'for schools stern men' is the wordplay.
'schools stern men' anagrams to 'LOCH NESS MONSTER'.
However, I'm not sure how this is indicated.

Can you help me to learn more?

(Other definitions for loch ness monster that I've seen before include "Legendary Scottish apparition" , "Scots apparition" , "in the Caledonian Canal" , "lt's never been found" , "chimera?" .)

I've seen this clue in The Daily Express.
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