Abstract
This structured narrative review aimed to synthesize the findings of various studies to determine the efficacy of Self-Regulated Learning (SRL) training programs for in-service and pre-service teachers on their knowledge and skills, and to evaluate the transfer to teaching practice and student outcomes. Following PRISMA guidelines, a search was conducted across Web of Science, Scopus, and PsycInfo, ultimately including 30 intervention studies. The results confirmed that professional development is effective in enhancing teachers' knowledge, skills, and beliefs related to SRL. However, due to wide methodological diversity, the review identified varied intervention factors showing promise, but a unified association between sample type (in-service vs. pre-service) and overall impact was unattainable. While SRL training successfully improves teacher competency, the limited evaluation of student performance or long-term effects prevents the definitive claim that the training reliably changes teaching practice toward a more self-regulated approach. Future research should prioritize robust longitudinal designs and include student-level measures.