Avg Teacher's pet behaviour

So recently bunch of my classmates sneaked mobile to the class which was obviously not allowed and that wasn't so bad but then they literally posted a story of photo clicked in class on their public accounts and guess what someone screenshotted it and sended it to the class teacher, and damn they were suspended for 2 days and school got their instagram accounts down which were with thousands of followers and later someone in our group chat sended this screenshot of that chat and everyone's trying to find who it was lol