Principled school looked after children? (4-6)

I believe the answer is:

high-minded

'principled' is the definition.
(thesaurus)

'school looked after children?' is the wordplay.
'school' becomes 'high' (high school is a kind of school).
'looked after children?' becomes 'minded' (to mind children is to look after them).
'high'+'minded'='HIGH-MINDED'

(Another definition for high-minded that I've seen is " Marked by strong principles".)

I've seen this clue in The Times.

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