Show the score to a pupil (7)
I believe the answer is:
musical
'show' is the definition.
(I know that musical is a type of motion picture)
'score to a pupil' is the wordplay.
'score' becomes 'music' (I've seen this in another clue).
'pupil' becomes 'L' (as in a learner driver with L-plates on their car).
'music'+'a'+'l'='MUSICAL'
'the' is the link.
(Other definitions for musical that I've seen before include "Tuneful; stage work" , "Stage entertainment" , "Euphonious" , "Song and dance show" , "Cats maybe" .)