THE ROLE OF EDUCATIONAL DIAGNOSTICS IN TEACHER PROFESSIONAL DEVELOPMENT

This article examines the pivotal role of educational diagnostics in teacher professional development (PD) and its impact on instructional quality and student outcomes. Through a mixed-methods study involving surveys, interviews, and classroom observations, the research highlights how diagnostic tools help educators identify their strengths and weaknesses, personalize their professional growth experiences, and enhance student engagement and achievement. The findings emphasize the need for educational institutions to prioritize educational diagnostics within PD frameworks to foster a culture of continuous improvement. The article concludes with recommendations for future research to explore the long-term effects of educational diagnostics on teacher effectiveness and student success.本文探讨了教育诊断在教师专业发展（PD）中的核心作用，及其对教学质量与学生学业成果的影响。本研究采用问卷调查、访谈与课堂观察相结合的混合方法设计，揭示了诊断工具如何帮助教育工作者明晰自身优势与不足，量身定制专业成长方案，并提升学生课堂参与度与学业成就。研究结果表明，教育机构需在PD框架内将教育诊断列为优先事项，以营造持续改进的校园文化。本文文末提出后续研究建议，倡议未来开展相关研究，探索教育诊断对教师教学效能与学生学业成功的长期影响。