Two boys (or girls occasionally) fighting in the playground and the whole school would run and surround them. Only very occasionally would a teacher intervene.
A random mum would come to the school to tell someone off. They would walk straight into the playground, usually pushing a pram, everyone would tag along behind them until when they reached the “bully” the whole school would be watching as they were told off. I don’t ever remember any back chat, they just stood and took their telling off with everyone jeering them.
In my P7 class one boy was made to sit in the waste paper bin with a dunce hat on (teacher made it out of cardboard especially) as he was (in her words) rubbish. This happened over 40 years ago and I have never forgotten it.
School wide games of British bulldog.
Getting the bus home for lunch at 5years old and being told to ask a lady to take me across the road.
In primary 7 (last year in primary school) the whole class had a test three times in the year and you had to sit at the desk for the whole term that related to how well or badly you did in the test. I am ashamed that it never occurred to me how awful that must have been for those who performed badly.
Being sent to the nurse for injections without your parents being even informed never mind permission being asked.
The P3 (age 7) girls being taken into the P7 class in our blue school kickers to show them how they should be dressed for PE.
In P1 (age 5) everyone had a little blackboard and a tin of chalk. The tin was always an old tobacco tin.