* People say "Kids are cruel" or "Kids are little shits" or stuff like that. This is very far from what I recall school being like. Sure, some people would make fun of you, etc. but that's just banter and the process of growing up is that. You can choose to join the norm (which I saw lots of people do) or violate that norm openly (which I also saw lots of people do) and you could do that for some norms and not for others.
* People say that kids made fun of each other for their clothes. We had uniforms. Everyone wore the same clothes and the same shoes. No jewelry. No cell phones. Everyone used the same tools.
* People say that kids would harass them by sitting next to them and constantly belittling them. We had assigned seating. Teachers would rearrange seating based on whether you're being disruptive, whether you're making other kids uncomfortable, etc.
* People say that school sucks. But I recall all school being pretty fun, even the negative feeling of heartbreak of crushes unrequited, games lost, or embarrassing moments in front of class are not feelings I carry negatively with me.
* People say they were made fun of for their hobbies. People would make fun of other people. I'm not going to lie. But someone who was the class's best CS 1.5 player was celebrated for that. And the top kids in each subject were heroes.
I know this usually comes off offensive but perhaps it's the structure of American schools that the complainants went to that influences the problem?
FWIW in school my classmates would describe me as "eccentric" or "weird" pretty often, but ultimately they didn't hurt me in any real way. And here are some other related facts about schooling that I notice isn't the case in America:
* Most people would go to school by public transit or transport themselves on non-motor vehicles: bicycles were okay but no one was allowed motorized transport.
* Teachers had substantial control over the class. There was very little disruption. And when it existed it was harmless.
* There were no weapons of any sort on campus.
* There were drugs (I smoked weed - which I regret mildly because I suspect it made me stupider) but it wasn't a complex organized trade and the hard drugs weren't present.