Persuasive exercises given to students in future (10)
I believe the answer is:
compelling
'persuasive' is the definition.
(similar in meaning)
'exercises given to students in future' is the wordplay.
'exercises' becomes 'pe' (Physical Education class).
'given to' means one lot of letters go next to another.
'students' becomes 'll'.
'in' means one lot of letters goes inside another.
'future' becomes 'coming' (similar in meaning).
'pe'+'ll'='pell'
'pell' placed into 'coming' is 'COMPELLING'.
(Other definitions for compelling that I've seen before include "Driver's action" , "Making" , "arousing strong interest" .)