Perhaps gifted young pupils may be told not to (6)
I believe the answer is:
fidget
'young pupils may be told not to' is the definition.
I can't judge whether this defines the answer.
'perhaps gifted' is the wordplay.
'perhaps' indicates an anagram.
'gifted' with letters rearranged gives 'FIDGET'.
Can you help me to learn more?
(Other definitions for fidget that I've seen before include "Make nervous restless movements" , "Restless person" , "who can't relax" , "Squirm" , "Wriggle" .)