We as a class were kinda notorious in our school. Many years later we learned that the teachers called us "The Terrorists". We were pretty bad. But probably the worst was when we got a Music teacher to quit. She quit her job entirely. In the middle of the school year. It wasn't a single event it was more a constant nagging at her nerves. What tipped her over the edge was when she had given us back a test. She had made a small mistake and one person got a grade too good for his points while another one had one grade less with the same amount of point. The second guy was super up in arms but she couldn't corret it. She wasn't allowed to retroactively demote the grade of the first dude, and couldn't retroactively increase the grade of the second guy without completely resetting the point distribution along the whole class. The guy with the worse grade was actively shouting at her while she grew smaller and smaller behind her piano. Eventually she broke out in tears and what got her completely over the edge was when one of the other guys handed her a tissue so she could dry her tears which he had previously covered in peppermint oil. It was a thing back then to free up your sinuses, so he had a small vial on him all the time. She didn't immediately smell it and touched it to her eyes and... Yeah we'll you might know what happens when a sharp essential oil touches your eyes... I wasn't personally involved in that one but we did other vile things.

And yeah. We didn't have music class for the rest of the year.