Peang Ratana completed a Master Degree in Science in Mathematics from Royal University of Phnom Penh & CIMPA. After completing Master’s degree in Cambodia, he taught at Pannasastra University of Cambodia, International University, University of Management and Economics and University of Puthisastra. He also attended Summer School at NIMS, Daejeon, South Korea about “Symplectic Embeddings systolic inequalities and celestial mechanics”, attended ASEAN Science Assembly Diplomats held at Davao City, Philippine, and attended Common Purpose ASEAN Young Leaders Program at Singapore Institute of Technology, Singapore. In 2019, he published his research paper on STEM Education at Royal University of Agriculture and on Learning in Digital Era at TCI/MOC Asia Conference at CamEd Business School in 2021.