He was definitely a fairly strict disciplinarian in some areas e.g. talking consistently or passing notes in class or if you forgot your homework. If you did this you had to go up to him and say out loud that you had not bothered and he would put you across his knee and pull up the leg of your short trousers or skirt and slap you hard 3 times on each upper leg which really hurt, If you had tried to make an excuse this would double to 6 on each leg which would bring tears to the eyes of most boys and girls.
Sometimes he would you spank hard on the bottom but if he did this you had to change into thin gym shorts. Girls just got it on their underwear but usually not that hard. .