Rules Keep Changing
We were allowed a 3×5 inch index card for my anatomy class and I would get the finest point pen to write down all my notes and then use a magnifying glass during the test to read it.
I got a semester’s worth of notes on there for the final. This came after the teacher had to specify that the 3×5 note card had to be in inches because someone brought a 3×5 foot poster board with all the notes on it.
After I did this, they made a new rule that did not allow magnifying glasses in class. Story credit: Reddit / Educational-Grape470