Possible Clues:

• Correction of recording: minimal change to cover inside
• Punish one following teacher round at home
• Piano score on record by one showing self-control
• Devoted follower around home and school
• Record reversal of very good policy for establishing control
• Punishment as part of learning
• Self-control and a bit of spine give rise to good ancestry
• Field at home crossed by faithful supporter
• Punish
• Follower's accepted in train