So many suggestions possible with that prompt.
I might suggest the Vlad Taltos series, starting with Jhereg, by Steven Brust. Reaslistic characters, snappy dialog, interesting premise of human’s status in the society, and a pretty far-out series of villains. It comes down to more or less a first person assassin- / intrigue-based plot with cleverly set-up who-dunnit elements here and there, and an overarching storyline, and a good sense of the universe.
Some good suggestions in this thread. If you want even more options - I have been tapping into this Slashdot thread for a decade now, and it’s still giving me winners - which might not work for you, mind (e.g .“Little, Big” by Crowley, it led me to “To Reign in Hell” also by Brust, “Jack of Shadows” by Zelazny,)
I’ve heard the socioeconomic differences thing many, many times, and have kids that wear uniform. But I’ve never understood that argument.
It conceals socioeconomic differences. Which in the case of economic differences, is probably not egalitarian, strictly speaking? Ditto for social “class” in the sense of whether the family is historically “monied” and has particular dress style. In the case of cultural or ethnic differences, I do not see how the egalitarian logic follows either, as freely expressing your identity is restrained.
In terms of bullying… in my experience bullies will always bully. They will just do it on your overcoat, or how old your uniform is, or your earrings, or your accent, or the colour of your hair. I don’t know, maybe the uniform helps a bit…