They organise the classrooms (13)

I believe the answer is:

schoolmasters

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'they' is the definition.
Both the answer and definition are plural nouns.
Perhaps they are linked in a way I don't understand?

'organise the classrooms' is the wordplay.
'organise' indicates anagramming the letters.
'the'+'classrooms'='theclassrooms'
'theclassrooms' anagrammed gives 'SCHOOLMASTERS'.

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