Jang Eun-Kyoung is a master teacher working as a teacher and consultant in South Korea. She has taught middle and high school students since 1992 and taught college students at Sungkyunkwan University and Hanyang University for 3 years. She is currently teaching students at Garak High School, seoul. She was certified as a Master Trainer in the field of Core Skill based Curriculum Design and teacher training by the British Council. She is a member of Special Committee on Digital Education, an Institution directly under the presidential office this year, and she also works as a specialist of revision of national curriculum. Her teaching and research focus is teacher professional development, blended learning lesson design, educative assessment, and differentiation and effective feedback using AI.