Allira
School rules- hair could not be left loose, it either had to be short or tied back in a pony tail or plaits.
If not, it got tied up with a piece of string by an irate teacher who would pull you to the front of the class by your hair.
I cannot imagine any 16 year old allowing a teacher to do that now! And quite right too.
At our school "Hair that touches the collar must be tied back".
They used to give you big brown elastic bands and you had to pull your hair back into them, even a short bob or straggly bits at the back. Removing the elastic band was quite painful and quite a bit of hair was pulled out in the process. Those were the days!!!!