To that someone:

Hey there, if you happen to read this post, let me tell you. After all, we're 1-5. One for all, all for one. Don't you think you're being kind of mean by making negative comments to others about some pupils in the class? You jolly well know who you are, need not me to point out your name. I bet you wouldn't want others talking back about you either, disgrace yourself for being a part of 1-5. Seriously, even if you have comments about us, then can't you just keep them to yourself? You think you're perfect? The answer is obviously a big fat no. You know there's some people in the class who dislikes you, you know it yourself! You told them you'll try to change, yet this is how you're going to change? Let me tell you, sooner or later you'll lose all your friends around you with that big attitude problem of yours. Badmouthing people who're being kind, thinking that you'll really change and they actually gave you a chance to change, befriending you again. And this is how you're going to repay them? You're taking us for granted! Seriously, if you still don't intend to change.. You'll lose all your friends. We're trying to tolerate you, tolerate your nonsense, tolerate you step-ing, tolerate you shouting, tolerate you flirting, and worse still your attitude. Don't go over the limits. One more time, I bet you'll lose all your friends by then. You should know who you are, please change -.-