I know things may be different now than they where when I was in H.S. but I was bullied as well during that age. I think the best thing for me in my situation was that my parents seperated and I was able to move out of the district. after I moved, everything I did, was in determination to make myself succesfull and eventually go back and be proud of where I am now, and where those bullies are. (which as it turns out, is not so well off)
so tell her to keep in mind that people who are bullied, usually get their retaliation by becoming a better person because they went through it.
kinda stupid, but I went through life saying to myself that whatever I live through only makes me stronger.
At the same time, this doesn't help you for right now. I don't know what school she is going to, but you need to really talk to the principal, talk to the teachers, talk to everyone. they don't see it because they are not specifically looking for it. a lot of times, they won't go out of their way to actually look for your daughter, and look for signs of trouble. they figure if it happens in front of them, then they have to do something. talk to a principle about PROACTIVE security instead of REACTIVE security.
a lot of times they (school administration) won't do anything unless a punch is thrown. when I was younger, I alsways heard my mom tell me to "walk away from fights"
could you believe someone punched me in the face, and I walked away? things only got worse after that.
then after several fights, where I was scared, and tried to get out of it, and continually went downhill, something magical happened. during the summer I had a great time, and had so much fun, and I started becoming confidant about myself again.
when school started again, I stood my ground. I do not endrose fighting, i think it's wrong, but when someone laid their hands on me again, I broke loose, and let go of any constraints. For the first time I wasn't on the lower hand of a fight. I had confidance. I tried walking away first, but after she physically shoved me into a locker, she initiated a fight that wasn't in her favor. that was groundbreaking to the other bullies because I didn't do what I normally did.
another thing, I HIGHLY suggest enrolling your daughter in karate. I know a very good place to go to that is relatively affordable in the area, so let me know if you want the name and location. karate is not to learn how to fight, it is to defend yourself. it is to build confidence, and give new insights on your life. my husband went to this school when he was younger, and the instructor would also request report cards from time to time, and try to help out the students in all aspects of life. it will also inspire a healthy life. your daughter is probably of normal weight, because now a days skinny is anorexic. make sure that she knows that standards for todays teen girls are unrealistic and unhealthy. and if in case she does have a few extra pounds, I lost a good 15 within 2 months of karate when I was younger.
another thing, when your daughter is approached by these bullies, is it in between classes, or before and after school?
If it's something that happens before and after school, Does she take the bus? or is there someone who can pick her up?
let the schools know that there is a huge problem, and your not going to sit around and let it happen. find out when the shcool board has meetings, see if you can get in your argument about hall monitering to prevent these types of problems.
but at the same time, you don't want to get involved on a one by one basis with the bullies parents, unless it is very extreme, because it may just cause a bigger problem for your daughter.
encourage her. support her. tell her how important she is to you. make her know she is loved. do things to help boost her self esteem. when you are a young girl hearing others call you ugly, even if you are beautiful, you will start to believe it.
maybe there is someone in your family that she adores and looks up to as a role model that can spend time with her, have a girls night, and make her feel better about her self.
I guess this is long enough, and maybe none of my advice helps, but I really hope your daughter can work through this.