reformation

(noun) improvement (or an intended improvement) in the existing form or condition of institutions or practices etc.; intended to make a striking change for the better in social or political or religious affairs.

(noun) a religious movement of the 16th century that began as an attempt to reform the Roman Catholic Church and resulted in the creation of Protestant churches. Synonyms: Reformation, Protestant Reformation.

(noun) rescuing from error and returning to a rightful course. Synonyms: reclamation. Example: "The reclamation of delinquent children."