Just a small one, I want to keep it in my purse but
I'm only sixteen.
well around 18 some places make pocket knives illegal try pepper spray instead
No, don't do it. Especially when you go to school. Even if an adult has a pocket knife, if there is not a certain use for it you can get introuble for carrying a weapon. For example; if you are a handyman who obviously would need a pocketknife, its fine. if you are pulled over, searched and have one, its considered a weapon.