We had labels on top of the gas mask box and I would put the date on these it a boy was late. Any boy that was late more than once in a two week period had to report back after school and would be given four of the canes on his bottom. As a rule, I found either no boys were late or it was a group of three of four. The only reason they were late was because they had played about on the way to school. For those that had been late more than once were went off to class. For those that remained I took a cane out of the cupboard, grasped the first boy by his wrist and THWACK the cane went across the palm of his. This was followed by me grasping his over wrist and giving that hand one stroke before moving on to the next boy.As a rule, I made it to assembly by 9.05.