Mark is a successful and highly qualified history teacher. He has taught in secondary schools across Wales for over 28 years. These schools range from valleys comprehensives to an independent sixth form college and school. Currently, he is head of department in a south Wales comprehensive school, which has outstanding A level and GCSE history results.
Mark passionately believes that all learners have the right to quality education. Over the years he has concentrated on developing an active pedagogy with much collaborative work and a focus on higher-order thinking skills. He has been filmed in action by the BBC for TV programmes and the DVD on Developing Thinking. The DVD, circulated to all schools in Wales, was produced jointly by the BBC, Estyn and the Welsh Government. He has also worked with the BBC, as a history content adviser for their educational materials and TV programmes.