In 2015 our new school was finished and we all moved there, so the old school was being renovated. Fast forward a year, the windows were smashed and all that so it was easy to get in. A big group of my friends went in there to play hide n seek and stuff, man that was some good funny times. I noticed a silent alarm go off (a single tiny peep) and told them but they said I was bullshitting. 10 minutes later we booked it as fast as we could. Then we did it again the next day and then the next and eventually police came one day. Never got caught though.
In Norway we have russefeiring where the last year of high school celebrate their last year, before they go to uni or whatever. They drive big red cars and buses around. They decided to attack our school with waterguns, yoghurt, eggs, you name it. We decided to get revenge, so when they were driving past the school, we threw a buncha eggs at their cars before they stopped the fucking car in the middle of the road and ran after us. No one got caught that time either. We would've gotten our asses beat, thank you adrenaline for the speed boost.