Crossword Genius

In class this boy when ordered sat, the creep (8,3)

Ross

I believe the answer is:

teachers pet

'in class this boy' is the definition.
(term for a very studious child)

'ordered sat the creep' is the wordplay.
'ordered' indicates anagramming the letters.
'sat'+'the'+'creep'='satthecreep'
'satthecreep' with letters rearranged gives 'TEACHERS PET'.

'when' is the link.

(Other definitions for teachers pet that I've seen before include "Favoured pupil" , "Least popular child in the class?" , "Class favourite" , "Subject of favouritism at school" , "Student of form favoured" .)

I've seen this clue in The Guardian.
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