-Assault on another pupil. Grabbed his head and smashed it off an iMac, you could see his skull. Blood everywhere
-Smoking everyday
-Walking out of lessons
-Not going to lessons
-Assault on a teacher. He grabbed me as I was walking out so I pushed him and he fell over
-Locking out teachers from the isolation room and causing chaos
-Stealing a teachers phone and selling it (Most scummy thing I have ever done) Didn't get caught. Felt bad so a month later I left money for a new phone in his desk
-Smashing a computer screen

The list goes on and on, I was a real d!ck in High school. I regret it, against all odds I passed my exams though with B's & C's (& 1 A). I was permanently expelled 2 times but let back in after appealing it.
There's nothing I regret more than being such an asshole in school lol

EDIT: Thought the post wa about high school lol. Criminal stuff is not too bad

Caught with possession of weed 2 times
Common assault
Assault
Minor fraud which I was let off with

I regret these to, but whats done is done.

Making 5+ holes in my desk from playing overwatch

Caught watching some explicit content lol

Got caught climbing a crane by the cops lmao, but they didn't do anything, they were cool about it.

I got caught holding some class A for my friend at a festival.
Luckily before I got searched he said hand anything over and I will let you go. Luckily I got away with it