In 2007, the summer after I graduated from university, I applied to be a marker for Edexcel, the GCSE exam board. The selection process involved online tests and training days, but wasn’t particularly rigorous. I think everyone in my cohort was accepted. We were all invited to a team-building lunch in Bloomsbury, where we met the people who would oversee our marking. My boss was a retired lecturer from Australia who joined Edexcel, he told me, to keep his mind sprightly, and because he believed in maintaining standards. I told him I’d applied to be a marker because I was broke.