Joseph Metry came to teaching from the laboratory. He holds a master's degree in analytical chemistry with honours and a pharmacy degree behind it, and he has spent 7 years in international schools and online classrooms since. That background shows in his lessons: the reactions students meet on paper are the same ones he has run, measured and interpreted.
He is known for taking a principle that looks impenetrable and rebuilding it from something familiar, whether that is a medicine, a purification method or a titration that went wrong. Digital simulations carry the explanation where a diagram cannot. More than 10,000 hours of teaching have made him precise about where marks are lost, and his lessons close the gap between understanding a topic and answering an examiner's question on it.