This study explored the demographic predictors of teachers’ stages of concern (SoC) for science, technology, engineering, and mathematics (STEM) education in Hong Kong. Results of multiple regression analysis demonstrated that teaching sector and participation in STEM education training predicted four SoC, whereas teaching subject area predicted two SoC. We discussed the significance of these findings by adopting a personalized approach to teacher professional learning. Copyright © ICCE 2020 - 28th International Conference on Computers in Education, Proceedings. All rights reserved.