He has taught a full range of undergraduate and graduate courses in science education such as chemistry methods course, research design in science education, science teacher professional development, etc. His research areas focus on pedagogical content knowledge (PCK), self-study research and action research. He directed the nationally funded Developing PCK-based professional development program for prospective science teachers and their school supervisors. Chatree is involved in collaborative research in many countries such as Canada, Japan, Korea, Spain, and Taiwan.