This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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v. To instruct again, especially in order to change someone's behavior or beliefs.

v. To retrain (a person) to function effectively; rehabilitate.

v. To educate or teach again, especially in order to remove bad practices.

v. To rehabilitate.

"Still others have been intended to "reeducate" prisoners of doubtful loyalty, sometimes by demanding self-accusation and false confession as well as by administering harsh treatment."

reeducated    reeducates    reeducating   

reeducation   

educate