David Homer is the current Chair of the International Baccalaureate® (IB) Examining Board and ex officio member of the Board of Governors. He has extensive experience in assessment both within the UK examining system and internationally. He acts as a consultant for Ofqual, the UK examinations regulator, and is the IB Chief Examiner in physics. He has acted as Chair of GCE Physics for a UK awarding organization. David studied at the University of Bristol, receiving a degree in physics. He followed this with doctoral study into the physics of glaciology, at the University of Birmingham. He later gained a postgraduate diploma in education. David’s teaching career was within the independent day-school sector in the UK, first at King Edward’s School, Birmingham, and then at Bristol Grammar School, where he was Head of Physics, Chair of the Science Faculty, and later Deputy Headmaster. He was a Schoolmaster Fellow at Corpus Christi College, Cambridge. In 2009 he received a Teacher of Physics Award from the Institute of Physics. He has authored textbooks for the IB Diploma physics course and for UK advanced-level qualifications in physics. Additionally, he has been involved in a number of curriculum developments within the UK and for the IB.