I went to a private school as a child, and I thought they were called "private schools" because you weren't supposed to tell anyone about them. It was weird every time my relatives asked how I was doing in school, only to get the response of "That's a secret."
A childhood belief about classes

others believed things like this
- When I was a child, I used to believe that armpits were private parts— Duda Gueiros
- When I was a kid, I wondered why they called it "public hair" when it was so private.Anon
- When I was a kid, I believed that bible school was "beauty school", and called it that all the time.— Dana
- I thought there were only four ranks in the army: private, corporal, Seargeant, and General— Alberto Richardson
- I thought when Grandma's hens were cackling, they were giggling about some private joke in the henhouse. — Not a farm kid
- when i first started school i thought the teachers lived in the school and slept on the tables.— emma