I understand that you are teenagers and you like to hang out with your friends and be noisy. This is totally fine - we're not expecting you to be completely silent. Hell, I can totally deal with you talking to each other (or to me) as long as you're not being too disruptive, especially if you're talking to each other in the context of doing homework.
In fact, I'm the fairly nice librarian, in that I will simply tell you to be a bit quieter rather than kicking you out the tenth time your volume has hit an unacceptable level in a two hour period.
However, even I have limits, and the fact that I, personally, have had to kick you out at least three times this school year should tell you something, considering that I do not work every day.
Things that are unacceptable and will get you one warning before getting kicked out (and no, I am not kidding):
- beat boxing/singing/making vocal noises other than talking (unless it is an emergency, in which case, go ahead and scream)
- playing music on your cell phones/playing games that have music on your cell phones (without headphones, if you have headphones, whatever)
- spending more than two minutes talking on your cell phones without leaving the room (go ahead and talk in the stairwell, the walls are actually pretty good at blocking out noise, that way you don't have to go outside when it might be freezing)
- throwing items at each other
- kicking each other/hitting each other
- dropping items (whether yours or others) to see if they make noise or to see if they break or simply to annoy each other
- yelling at each other while playing games on the computers because your friend killed your character
If you continue to insist on doing these things, I will continue to kick you out.
P.S. It's nice that you noticed that I was writing a report in the reference notebook about your behavior, because you should realize that it means we librarians are communicating with each other. I don't object to you putting in a report on how the librarians are "mistreating" you - you have the right to stand up for yourself. However, when that report is a bunch of random words (including "I like to poop") and drawings (including one labeling the director as a "meany") scrawled on a piece of paper? I'm pretty sure it's not going to actually help your case at all.