54 11 is the magic number for the older clutch of teacers. It’s the age at which they are currently first able to officially retire and use up all their sick leave and holiday pay before quietly wandering off into the night. Fifty four years and eleven months. They’ll count it down from about 50 onwards.

Mind you, if you choose not to take the option, you can keep teaching until you decide yourself it’s time to put the pencils away.