@iamnotinteresting611 Woah... real complicated question. Good thing you came to the brainy one ;)
In my opinion, mean guys are equally as bad as female dogs, but it seems like you really enjoy your current home room :) And also the guys are quite nice, same goes for your teacher. So I suggest you just stay in your current home room. Female dogs... well... will be female dogs. It's best to just ignore them, and I'm pretty sure they will leave you alone. And as for your friend... she seems cool to me too, and yes 50 percent chance she will go back to her clan, but it is up to her to decide on who she wants to stay with. If she was smart enough (not saying she isn't) , she would see that going back to the clan wouldn't benefit her at all and it would just influence her badly, but it really is up to her to decide. If she does ever leaves you for the clan, it's okay. Try making friends with the guys in your class, or maybe someone else in the school :) It takes much courage, but I believe you can do it ;)
But really, I can't really decide for you since it is your life and not mine. If you're happy with where you are now, then stay. But if you're not, then leave. Just like me! :) Left Yg for Cube and now I'm happy with where I am now ^^ I left my Ikonic friends behind, but it was for the best. I'm sure your friend would understand if you talked it out.
So it really depends, but if I were you I would stay :) Your happiness and your well being are the most important. Good luck and stay happy :) Fighting! ♡
P.S : So sorry for only replying now :( So many music shows and interviews to attend.