I finished my PhD in volcanology with the Open University earlier this year, and spent my summer working for the Brilliant Club. The Brilliant Club are a small but growing charity whose mission is to widen access to highly selective universities in schools serving low participation communities. They do this by placing postgraduate research students in schools to deliver small group university-style tutorials to pupils aged 10-18.
While most postgraduate research students teach one or two groups a week over the course of five weeks I taught five groups in four different schools in and around London. I took on this larger teaching load as I had already finished my PhD and was otherwise at a bit of a loose end.