I'm already so sick of my classmates!

so I was in history/world history class and I was just doing my work as per usual and all of a sudden someone asks me "hey do you know this capital?" and I go "nah sorry I don't know that one either." obviously I turn around thinking nothing of it because like... it was just a regular question yk? then, all of a sudden I hear them say to the person next to me and go "oh my gosh...was that a boy or a girl.....?!" and i'm just sitting in my chair like :/ . I mean people misgender me like all the time, I even get asked if I'm transgender or people just assume I am. and the person sitting next to me is egging them on going "omg staaaawp! you're gonna get canceled!" and the entire time me and my friend are looking at each other like 

so I turn to confront them and say "dude can you stop please? that's not funny bro" and they're like "wait I literally wasn't even talking about you....." "yes you were" "no I'm not" "yes you are!" "well...okay I was but like it was funny! like I can laugh" (╥﹏╥) mind you we're freshman... so why are they still doing that immature middle school stuff....?! we're in HIGH SCHOOL now.