My father, John Hallett, who has died aged 97, had a long career in education that took him all over the world.
In 1960, John flew to Ghana with his young family to take up a position teaching undergraduates maths and physics at Kwame Nkrumah University of Science and Technology, in Kumasi. There, he was an examiner for the West African Examinations Council and chief examiner for O-level, and wrote a physics O-level textbook for use in West African schools. As a Methodist lay preacher, he also preached regularly at village churches.
