Crossword Genius

Sound teaching, organised, taking register (8,5)

Ross

I believe the answer is:

counting heads

'taking register' is the definition.
(e.g. in a school)

'sound teaching organised' is the wordplay.
'organised' indicates anagramming the letters.
'sound'+'teaching'='soundteaching'
'soundteaching' with letters rearranged gives 'COUNTING HEADS'.

I've seen this clue in The Everyman puzzle in The Observer.
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