Summary
It was meant to give students a fair chance even when tests were tough.
A pass mark of 33% means you need to answer about one out of three questions correctly.
Teachers chose this number so that students could still succeed if the test was very difficult.
Many schools still use the same rule because it is easy to understand.
It was meant to give students a fair chance even when tests were tough.
Want to learn even more? Click here to read the full story!