I used to think one of the main school rules (no running, hands to your self, don't talk when the teacher is talking, etc) included no whistling. But you've got to notice no one ever whistles in class and if the do the teacher gets really mad.
A childhood belief about classes

others believed things like this
- I used to think my elementary school gym teacher's name was "Jim Class".— Brandon Campbell
- I used to belive that the law was a number of rules on a notice board outside Buckingham Palace.— Nathan Vasey
- When I was in kindergarten, I used to believe that they locked the teacher's in the teacher's lounge at night.Anon
- When I was in elementary school I use to think that teacher lived at school at their desks all year long.Anon
- I used to think that my teacher lived at school until she came to school late one day. I was shocked!— Wow, you have a life?!
- A[n] nth grade teacher only had to finish the nth grade when he or she was in school.— MD Caruso