‘再教育’ literally means 'again education' — combining 再 (again), 教 (to teach), and 育 (to nurture or educate). It refers to the process of retraining or re-educating someone, often to correct outdated knowledge, update professional skills, or align with new policies, standards, or ethical guidelines. Unlike basic education, 再教育 implies prior learning has become insufficient or inappropriate, requiring systematic revision.

This term is commonly used in formal or institutional contexts: workplace safety training, medical professionals updating clinical protocols, teachers learning new pedagogical methods, or civil servants studying updated laws. While historically associated with political campaigns, modern usage is largely neutral and technical — especially in healthcare, education, and regulatory compliance. It carries no inherent negative connotation in contemporary professional settings unless context suggests coercion or ideological pressure.