Problems gaining respect and controlling young girls in my gym class? Help, why are these girls being so mean?

Okay so I am a Senior in high school and a student leader for gym class, I basically help the teacher out with things and keep the students in order, making sure they are behaving and doing thing right. Now I started school last week and everyone in class seemed easy to warm up and were friendly to me, even the mean girls and they would talk a little and ask me questions and I was never mean to any of them or yelled at them ever. But today earlier one of the girl's shoes was untied and I very nicely told her to fix it becuase I don't want her to trip or get hurt and she acts all annoyed at me, again she had no problems with me before and was nice to me before and then she eventually ties her shoe lace after 5 minutes of rebelling. Next I catch her with gum in her mouth and our school has a no gum chewing policy so I tell her about it and she gets all annoyed again and says I already swallowed it. Her and her friends then look at me all annoyed and like I did something bad like I was a stalker or I was mean to her, when I said everything in a nice, calm voice. I am not a mean person, I am a pacifist and have no known enemies, and all the other girls in my grade are nice to me and treat me with respect. I noticed that a lot of younger girls, freshmen, at our school have attitude problems, even if you are a saint to them. Again I never saw the girls before this year and they have no past history with me or any relatives and I have never done anything bad in high school before.





So I have two questions. Why are the younger girls like this towards certain people, again I'm not a nerd or gay, in fact, I am very liked by almost everyone I know in my class. I am down to Earth and not a weirdo either, what is it that younger girls are thinking about high school? And what can I do to gain respect and not become enemies with them becuase I want to be a great student leader for them and set great examples and teach them to respect their elders? I am 18 for Christ's sake and was a freshman 3 years ago, I have much more experience and knowledge than them, what makes them think they can give me an attitude, and ignore me, I actually have the power to write them up but I'm too nice to do that. The freshmen guys in that class are all nice to me and all over me for some reason and they respect me and listen well to me but some of the girls are difficult to understand.Problems gaining respect and controlling young girls in my gym class? Help, why are these girls being so mean?
When you lead a class, you can't be liked by everyone. You gotta put rules. And have a sense of justice about how you use them (it's not always easy, I must admit).


Being fair is more important than being nice if you wanna be respected.


If they're mean, be mean. If they're ok, be ok (but still vigilant).


Don't worry, maybe you will have to be mean from time to time, when it's necessary. But it will not last forever. Most of the girls will very probably change their attitude quickly.


If you're always trying to be nice, they will probably be meaner and meaner 'cause they see that you do nothing...Problems gaining respect and controlling young girls in my gym class? Help, why are these girls being so mean?
girls are beyotches now a days =/
Just talk with them.


Ask their feelings towards you.