reform
US /rɪˈfɔːrm/
UK /rɪˈfɔːrm/

1.
the improvement or amendment of what is wrong, corrupt, or unsatisfactory
:
•
The government promised significant reform in the education system.
•
Social reform movements gained momentum in the 19th century.
1.
2.
cause (someone) to change their behavior for the better
:
•
The program aims to reform young offenders.
•
He promised to reform his ways after being released from prison.