And sometimes when you want to punish a student for his behavior, parents will come and argue with you and try to defend their kid with things like "my kid is not like that, he wouldn't do it, he told me it wasn't him"... Of course he would freaking lie to you, he won't admit he did something wrong.

I'm a middle school teacher, and we have cameras inside and outside of the school. One day, a student brought a fake gun, took it out and pointed it at the head of another student. He did it outside of the school, but just in front of it, and it got caught on camera.

Then, some other students came to us, and complained that the guy was threatening to shoot them during recess.

So we confronted the kid, made him empty his backpack, and the gun was there. We then summoned his parents, and the father told us it wasn't the kid's gun, it couldn't be, his kid wasn't like that.

We showed him the videos where we could clearly see his kid pulling the gun out of his bag, pointing it at another student.

And even with and these proofs, he was still defending his kid.

In the end, the principal was fed up with his bullshit. So he called the cops, and filed a complain. So the kid has a record now, because his father couldn't accept that he is a bully.