In a previous era, 18 year old school leavers, usually from the southern hemisphere, provided a source of unskilled, cheap labour to the sports departments of schools. This was never especially satisfactory, but the contribution of classroom teachers to games coaching in those days generally meant that there wasn’t a shortage of staff. A limited programme, based on compulsory team games, required a smaller coaching force - and a more limited skill set.
Incrementally, many schools started to replace their gap year ‘students’ with a better qualified, older and more experienced constituency of sports help. These were university leavers,...