I was bullied a little, but frankly kids are not nearly as horrible as people say. The adults were far worse.
When I hit high school I may has well have sent up a flare to all the pathetic little fascists who became a teacher not to teach, but because it was the only meager bit of power they could grab. I came from a different city, my uniform was all off-brand, I didn't have any money, my fees weren't being paid on time, I didn't have all the books, I spoke differently, and my commute was long and prone to delays. I was an easy target, and it would only get worse as the clothes began to wear and my stationary began to dwindle without replacements.
I'd get pulled out of class randomly, not by my teacher but by someone else on staff who had taken on some admin work. They'd look me over trying to find something to punish me for. I got done once because the hem of my shirt wasn't thick enough. No, that wasn't specified in the dress code.
I once spent months being locked alone in a detention room and not allowed to attend classes.
The longer this went on for the more things there were to find. My grades obviously went down, as did my attendance. I had been an A student in gifted classes at the beginning.
I knew about a dozen people who were constantly being harassed this way. More than half of them dropped out of school.
Also one of my regular harassers was fired a few years after I left for being a pedophile.