Charis holds a Bachelor of Social Science and a Master of Philosophy degree in Psychology from the University of Hong Kong. She advanced her studies by obtaining a Postgraduate Certificate in Education, a Master of Arts degree in Values Education, and a Doctor of Philosophy degree in Education from the Chinese University of Hong Kong.
Charis has served as a teacher and graduate mistress in a local secondary school. She has also contributed to different school partnership programs and conducted research on spiritual education, values education, and life education.