You attend a basketball game at your school, and sit beside some students in your science class who have a bad reputation. You notice your wallet is missing and you're sure the students took your wallet. You tell the students that you cannot find your wallet and ask if they have seen it. They state that they have not. What would be the next action(s)?
Hopefully having the officer around will scare someone to confess or give up the person who actually stole the wallet.
I found this study to be very interesting.
You can't accuse anyone without proof so who you wouldn't know whose parents to tell. Plus getting too many people involved might result in a negative response.