The Survey of Rewards and Punishment in Schools published in 1952, clearly indicates on page 163 of its report that the proportion of boys caned in school remained roughly the same in the last two years of secondary school, as it was in the last two years of primary school – basically boys started being caned in significant numbers at some point between the age of nine and eleven, and a similar proportion of boys were caned from then on right up until the age of 15. That doesn’t mean caning was necessarily as common – perhaps those boys were caned once on average in primary school, and three times on average in secondary school – but virtually the same proportion of boys experienced it at least once in every two year period surveyed.