reminds me of an incident in form 2, when our english lady teacher noticed a piece of broken mirror on the floor, on checking she noticed several other such pieces in different parts of the classroom, This would not have been a problem were it not for the fact that she used to go round marking our work. you can only imagine its use in a boys' school.
I remember one guy who used to keep an inventory of the different colours.
We spent the rest of that day splitting firewood for the school kitchen.