Mr Or Siem
§ 4th February - 12th March, 2018: Building capacity in education system to implement decentralization reform (Sydney University Australia, Australia).
§ 29th August, 2012 - 18th April, 2013: A Capability - Building Program in Curriculum and Materials Development for Teaching English in Secondary School in Cambodia.
§ 6th - 24th February 2012: Specialist Certificate Course in language Curriculum and Materials Development at the SEAMEO Regional Language Center.
§ 12th - 22nd November, 2011: Course Education Good - Excellence in Public Schools Civil Service Singapore Certificate of Education Good Excellence in Public Schools.
§ 3rd November, 2008 to 31st July, 2009: National Institute Education Training Certificate.
§ April, 2008 : Regional Centre for Educational Innovation and Technology Certificate of Completion to Monitoring and Assessment of Integration of Human Values in Water, Sanitation and hygiene Education in Southeast Asian School.
§ April to June, 2007: Royal University of Phnom Penh Certificate of Education Research
§ 2nd to 27th July 2007: SEAMEO RECAM, MALAYSIA Certificate of Interactive Multimedia the Teaching learning of Secondary Science.
§ 16th to 17th July: SEAMEO RECAM, MALAYSIA Certificate of Workshop Entitled ‘Creating Interactive Student- centered Learning and Products.
§ 24th to 26th December 2007: Ministry of Education youth and Sport Certificate of Workshop on “ CEDAW NAD CMDQS”
§ 5th to 6th November, 2001: Seminar Japanese Tourism Conducted 1st in Phnom Penh Organized by the ASEAN Promotion Centre on Trade
§ December, 2004 to February, 2005: International NGO Lamp for Mercy Certificate in Computer Training Course.
The areas of his interests in teaching and research consist of Curriculum, education system to implement decentralization reform, School-based management, School leadership, School improvement, education policy, Education system reform and Curriculum and Instruction.