I was a tutor throughout high school - it started out as helping friends who were struggling with material during GCSEs (mostly core subjects) and expanded as more people heard, to me going to students' homes every week for tutoring sessions. This then grew when I became a Mathematics Prefect in my senior year, when my teacher asked me to help some GCSE students who were struggling with Mathematics, helping them to eventually get 7-9s in the final exam.