Exercise in school with boy about to ride a bike (5)
I believe the answer is:
pedal
'to ride a bike' is the definition.
(I've seen this in another clue)
'exercise in school with boy' is the wordplay.
I cannot quite see how this works, but
'exercise' could be 'pe' (Physical Education) and 'pe' is located in the answer.
'boy' could be 'dal' and 'dal' is found in the answer.
This accounts for all the letters.
This may be the basis of the clue (or it may be nonsense).
'about' is the link.
Can you help me to learn more?
(Other definitions for pedal that I've seen before include "Lever operated by foot" , "related to feet" , "work with press from Oxford?" , "Plead for bike pusher" , "ride a cycle" .)