Trained cadet due for promotion (8)

I believe the answer is:

educated

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'trained cadet due for promotion' is the definition.
I can't tell whether this defines the answer.

'trained cadet due' is the wordplay.
'trained' indicates an anagram (to train can mean to grow something into a shape).
'cadet'+'due'='cadetdue'
'cadetdue' with letters rearranged gives 'EDUCATED'.

Can you help me to learn more?

(Other definitions for educated that I've seen before include "Instructed, taught" , "Maybe enlightened" , "Erudite" , "Civilised" , "Having completed schooling, well informed" .)

I've seen this clue in The Telegraph, The Globe and Mail and The Guardian.

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