The veteran examiner reckons students' performance is reliably correlated to name types. A* names include "absolutely any associated with Greek mythology, with the exception of Jason" as well as "hippy" names such as Gandalf and Sky. A-grade names are "middle class names which haven't yet been adopted by the hoi polloi"... So top marks to Jemima, Ruth and Alexander.
Sadly for Emma, Tom, William and Rebecca their names "used to be middle class but are going downwards" and they are therefore doomed for a B grade. Jane belongs in this category but slips to a C grade along with Michelle and Michael, if spelt "Jayne". Fraser, Liam, Ryan, Darryl, Ashley and Tracey are destined for grade Ds.
But, the examiner reassures us: "Before you all advise Year 11 students to change their names, I do read the papers and mark on what's there. Every so often an intellectual Jason turns up!"